Which one of the following in true about this program?

#include<stdio.h>
#include<stdlib.h>
#include<string.h>                              
 
int main()
{
    char *ptr;
    printf("%p\n",ptr);
    ptr = (char *)malloc(sizeof(char));
    printf("%p\n",ptr);
    return 0;
}

A. countw B. wcount C. wc D. count p E. None of the above

A. dm B. rm C. delete D. erase E. None of the above

A. rdir B. remove C. rd D. rmdir E. None of the above

A. x B. y C. a D. z E. None of the above