which option is the correct answer for c language coding?

int x, n; D00V AWN Consider the following program which reads integers from a text file: 1 #include 2 3 int main(void) 4 { 5 6 7 FILE *z; 8 9 Z=fopen("myfile.txt", "r"); 10 11 do { 12 13 X= fscanf(z, "%d", &n); 14 15 printf("We read in %d ", n); 16 17 } while (* !- EOF); 18 19 return 0; 20 } At which line should we insert a statement to instruct the operating system to close the input file? A. Line 10 B. Line 12 C. Line 14 D. Line 18