In the following code, what is the first line that introduces a memory leak into the program? (Type the line number into the box below.)

1: #include

2: #include

3: #include

4:

5: int main(void)

6: {

7: char *word1 = NULL;

8: char *word2 = NULL;

9:

10: word1 = malloc(sizeof(char) * 10);

11: word2 = malloc(sizeof(char) * 12);

12:

13: word1 = "bramble";

14: word2 = word1;

15: word1 = malloc(sizeof(char) * 10);

16:

17: word1 = NULL;

18: word2 = NULL;

19:

20: return 0;

21: }

it's not at line 14 or 20.