Consider the following code segment.

A $19-$line code segment reads as follows. Line $1$: int, open square bracket, close square bracket, open square bracket, close square bracket, mat equals new int, open square bracket, $3,$ close square bracket, open square bracket, $4,$ close square bracket, semicolon. Line $2$: for, open parenthesis, int row equals $0,$ semicolon, row less than mat, dot, length, semicolon, row, plus, plus, close parenthesis. Line $3$: open brace. Line $4$: for, open parenthesis, int col equals $0,$ semicolon, col less than mat, open square bracket, $0,$ close square bracket, dot, length, semicolon, col, plus, plus, close parenthesis. Line $5$: open brace. Line $6$: if$,$ open parenthesis, row less than col, close parenthesis. Line $7$: open brace. Line $8$: mat, open square bracket, row, close square bracket, open square bracket, col, close square bracket, equals $1,$ semicolon. Line $9$: close brace. Line $10$: else if$,$ open parenthesis, row, equals, equals, col, close parenthesis. Line $11$: open brace. Line $12$: mat, open square bracket, row, close square bracket, open square bracket, col, close square bracket, equals $2,$ semicolon. Line $13$: close brace. Line $14$: else. Line $15$: open brace. Line $16$: mat, open square bracket, row, close square bracket, open square bracket, col, close square bracket, equals $3,$ semicolon. Line $17$: close brace. Line $18$: close brace. Line $19$: close brace.

What are the contents of mat after the code segment has been executed?

Responses

Option A shows a $4$ by $3$ matrix that reads as follows: open brace, open brace, $2$ comma $1$ comma $1,$ close brace. Comma, open brace, $3$ comma $2$ comma $1,$ close brace. Comma, open brace, $3$ comma $3$ comma $2,$ close brace, comma open brace, $3$ comma $3$ comma $3,$ close brace, close brace.

Image with alt text: Option A shows a $4$ by $3$ matrix that reads as follows: open brace, open brace, $2$ comma $1$ comma $1,$ close brace. Comma, open brace, $3$ comma $2$ comma $1,$ close brace. Comma, open brace, $3$ comma $3$ comma $2,$ close brace, comma open brace, $3$ comma $3$ comma $3,$ close brace, close brace.

Option B shows a $4$ by $3$ matrix that reads as follows: open brace, open brace, $2$ comma $3$ comma $3,$ close brace, comma open brace, $1$ comma $2$ comma $3,$ close brace. Comma, open brace, $1$ comma $1$ comma $2,$ close brace. Comma, open brace, $1$ comma $1$ comma $1,$ close brace, close brace.

Image with alt text: Option B shows a $4$ by $3$ matrix that reads as follows: open brace, open brace, $2$ comma $3$ comma $3,$ close brace, comma open brace, $1$ comma $2$ comma $3,$ close brace. Comma, open brace, $1$ comma $1$ comma $2,$ close brace. Comma, open brace, $1$ comma $1$ comma $1,$ close brace, close brace.

Option C shows a $3$ by $4$ matrix that reads as follows: open brace, open brace, $2$ comma $3$ comma $3$ comma $3,$ close brace. Comma, open brace, $1$ comma $2$ comma $3$ comma $3,$ close brace. Comma, open brace, $1$ comma $1$ comma $2$ comma $3,$ close brace, close brace.

Image with alt text: Option C shows a $3$ by $4$ matrix that reads as follows: open brace, open brace, $2$ comma $3$ comma $3$ comma $3,$ close brace. Comma, open brace, $1$ comma $2$ comma $3$ comma $3,$ close brace. Comma, open brace, $1$ comma $1$ comma $2$ comma $3,$ close brace, close brace.

Option D shows a $3$ by $3$ matrix that reads as follows: open brace, open brace, $2$ comma $1$ comma $1$ comma $1$ close brace. Comma, open brace, $3$ comma $2$ comma $1$ comma $1,$ close brace. Comma, open brace, $3$ comma $3$ comma $2$ comma $1,$ close brace, close brace.

Image with alt text: Option D shows a $3$ by $3$ matrix that reads as follows: open brace, open brace, $2$ comma $1$ comma $1$ comma $1$ close brace. Comma, open brace, $3$ comma $2$ comma $1$ comma $1,$ close brace. Comma, open brace, $3$ comma $3$ comma $2$ comma $1,$ close brace, close brace.