Given this code to read in a file named a$.$txt$,$ what do we know about the structure of the content in a$.$txt$?$ Assume that fileln is an open pointer to a file.

$1$ char str$1[20],$ str$2[20]$;

$2$ int num;

$3$ while$($ fscanf$($ fileln$2,"\%$s $\%$d $\%$s$",$ str$1,$ &num, str$2)==3)$

$41$

$5$ printf$("\%$s $\%$d $\%$s

$",$ str$1,$ num, str$2)$;

$63$

The file contains alternating rows of string's and int's

The file contains a repeating pattern of string, int, string separated by a comma

The file contains alternating rows of int's and strings

The file contains a repeating pattern of string, int, string, int separated by a space

The file contains a repeating pattern of string, int, string separated by a space