Babcox Manufacturing Uses a Predetermined Manufacturing Overhead Rate Based on Direct

Babcox Manufacturing uses a predetermined manufacturing overhead rate based on direct labor hours to allocate manufacturing overhead to jobs.Selected data about the company's operations follows: $$\begin{array} { | l | r | } \hline \text { Actual manufacturing overhead cost } & \$ 400,000 \\\hline \text { Estinated manufacturing overhead cost } & \$ 420,000 \\\hline \text { Estimated direct labor cost } & \$ 180,000 \\\hline \text { Estinated direct labor hours } & 60,000 \\\hline \text { Actual direct labor hours } & 55,000 \\\hline \text { Estinated machine hours } & 80,000 \\\hline \text { Actual machine hours } & 84,000 \\\hline\end{array}$$ By how much was manufacturing overhead overallocated or underallocated for the year?

A) $20,000 underallocated
B) $20,000 overallocated
C) $15,000 underallocated
D) $15,000 overallocated