Please help me with the right option

A Company uses job order costing and has chosen direct labor hours to allocate its manufacturing overhead. The company estimates that total direct labor hours to be operated next year are 500,000 hours. The estimated variable overhead is $15 per hour and the estimated fixed overhead costs are $750,000. The predetermined overhead rate is: O a. $22.5 O b. $1.5 O c. None of the answers given O d. $16.5 O e. $11