Please help with the following question:

To assign overhead costs to each product, the company

a) multiplies the activity-based overhead rates per cost driver by the number of cost drivers expected to be used per product.

b) multiplies the overhead rate by the number of direct labor hours used on each product.

c) assigns the cost of each activity cost pool in total to one product line.

d)multiplies the rate of cost drivers per estimated cost for the cost pool by the estimated cost for each cost pool.