What is the output of this program?

#!/bin/sh
echo "Just call the function"
hello_function
hello_function() {
   echo "This is a function"
}
exit 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