Panamint Systems Corporation is estimating activity costs associated with producing disk drives, tapes drives, and wire drives. The indirect labor can be traced to five separate activity pools. The budgeted activity cost and activity base data by product are provided below. Procurement Scheduling Materials handling Product development Activity Cost Activity Base $370,000 Number of purchase orders 250,000 Number of production orders 500,000 Number of moves 730,000 Number of engineering changes 1,500,000 Machine hours Production Number of Purchase Orders Number of Production Orders Number of Moves Number of Engineering Machine Changes Hours Number of Units Disk drives 4,000 300 1,400 10 2,000 2,000 Tape drives 4,000 150 800 10 8,000 4,000 2,500 Wire drives 12,000 800 4,000 25 10,000 The activity rate for the procurement activity cost pool is Oa. $18.50 per purchase order Ob. $43.53 per purchase order Oc. $37.00 per purchase order Od. $15.42 per purchase order