Panamint Systems Corporation is estimating activity costs associated with producing disk drives, tapes drives, and wire drives. The indirect labor can be traced to four separate activity pools. The budgeted activity cost and activity base data by product are provided below. Procurement Scheduling Activity Cost Activity Base $326,500 Number of purchase orders 204,100 Number of production orders 408,100 Number of moves 718,000 Number of engineering changes 1,476,800 Machine hours Materials handling Product development Production Number Number of Purchase Orders Number of Production Orders Number of Moves Number of Engineering Changes Machine of Hours Units Disk drives 3,990 370 1,210 12 1,600 1,900 Tape drives 2,200 135 500 6 9,900 3,500 Wire drives 11,200 730 4,100 28 11,600 2,100 The activity rate for the procurement activity cost pool is a. $63.93 per purchase order b. $18.78 per purchase order c. $264.37 per purchase order d. $165.26 per purchase order