Schedule of Activity Costs Quality Control Activities Activity Cost Process audits $49,900 Training of machine operators 29,400 Processing returned products 16,500 Scrap processing (disposal) 24,600 Rework 5,800 Preventative maintenance 27,400 Product design 41,900 Warranty work 9,300 Finished goods inspection 23,100 From the provided schedule of activity costs, determine the total activity cost. Oa. $148,000 Ob. $275,759 Oc. $227,900 Od. $96,800