Direct Direct Direct Materials Labour Cost Labour Hours

Direct Direct Direct Materials Labour Cost Labour Hours
Job 400 $200 $800 40
Job 401 250 200 10
Job 402 500 600 32
O'Hare Sisters Manufacturing uses job costing and applies overhead using a normal costing system using direct labour hours as the allocation base. This period's estimated overhead cost is $400,000, estimated direct labour cost is $500,000 and estimated direct labour hours are 25,000. This period's actual overhead cost was $420,000, actual direct labour cost was $390,000, and actual direct labour hours were 20,000.
What is the overhead allocation rate?

A) $21/hour
B) $10/hour
C) $16/hour
D) $18/hour