Soap Co. uses job costing and applies overhead using estimated 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. Which one of the following is the overhead allocation rate? Question 22 options: a) $15.60/hour b) $16.00/hour c) $16.80/hour d) $20.00/hour