Schedule of Activity Costs Quality Control Activities Activity Cost Process audits $48,500 Training of machine operators 27,000 Processing returned products 20,500 Scrap processing (disposal) 26,200 Rework 7,500 Preventative maintenance 28,600 Product design 42,600 Warranty work 6,000 Finished goods inspection 22,100 From the provided schedule of activity costs, determine the total activity cost. Oa. $151,300 Ob. $229,000 Oc. $277,090 Od. $102,700