OP Technologies Manufacturing manufactures small parts and uses an activity-based costing system. Est. Indirect Activity Activity Costs Allocation base Cost allocation rate Materials $75,000 Material moves $4/move Assembling $263,000 Machine hours $9/machine hour Packaging $110,000 # of finished units $2/finished unit O A. $18,000 OB. $1,300 OC. $1,350 D. $2,925 Click to select your answer.