Point out the correct statement which correctly free the memory pointed to by 's' and 'p' in the following program? #include #include int main() { struct ex { int i; float j; char *s }; struct ex *p; p = (struct ex *)malloc(sizeof(struct ex)); p->s = (char*)malloc(20); return 0; }

• A. free(p); , free(p->s);
• B. free(p->s); , free(p);
• C. free(p->s);
• D. free(p);