Schedule of Activity Costs Quality Control Activities Activity Cost Process audits $48,000 Training of machine operators 26,800 Processing returned products 20,500 Scrap processing (disposal) 24,100 Rework 5,700 Preventative maintenance 29,900 Product design 43,000 Warranty work 7,600 Finished goods inspection 22,900 From the provided schedule of activity costs, determine the total activity cost. a. $98,300 Ob. $228,500 Oc. $276,485 Od. $148,900