What is output of the following program?

int main() 
{     
	fork();       
	fork();        
	fork();       
	if (wait(0) == -1)          
	printf("leaf child\n");  
}

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