What is the output of this program?

#!/bin/sh
test_function1() {
    a=5
    echo "This is the first function"
    test_function2
}
test_function2() {
    echo "This is the second function" 
    test_function3
}
test_function3() {
    echo "This is the third function"
}
test_function1
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