750 150 $40 Jackson Corporation Jackson Corporation is a manufacturer of a versatile statistical calculator. The following information is a summary of defective and returned units for the previous year. Total defective units 1,000 Number of units reworked Number of customer units returned Profit for a good unit Profit for a defective unit $25 Cost to rework a defective unit $10 Cost of a returned unit $15 Total prevention cost $10,000 Total appraisal cost $5,000 Refer to Jackson Corporation. The profit lost by selling defective units to Pittman Company totals $1,440. The total rework cost for 700 units is $28,000. The difference between the profit earned on a good unit and a defective unit is $12. How many total defective units did Jackson Corporation produce? Select one: a. 736 b. 120 C. 740 d. 820