Babcox Manufacturing uses a predetermined manufacturing overhead rate based on direct labor hours to allocate manufacturing overhead to jobs. Selected data about the companys operations follows:

Actual manufacturing overhead cost	$410,000
Estimated manufacturing overhead cost	$400,000
Estimated direct labor cost	$180,000
Estimated direct labor hours	50,000
Actual direct labor hours	55,000
Estimated machine hours	80,000
Actual machine hours	84,000

By how much was manufacturing overhead overallocated or underallocated for the year?

$40,000 overallocated

$30,000 overallocated

$40,000 underallocated

$30,000 underallocated

Please explain process.