What is the output of the program?

#! /usr/bin/awk -f
BEGIN {
    a[1]="example"
    delete a[1]
    print a[1]
}

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