Schedule of Activity Costs Quality Control Activities Activity Cost Process audits $49,200 Training of machine operators 26,000 Processing returned products 16,900 Scrap processing (disposal) 25,800 Rework 5,600 Preventative maintenance 31,100 Product design 43,700 Warranty work 8,000 Finished goods inspection 23,800 From the provided schedule of activity costs, determine the total activity cost. Oa. $97,500 Ob. $149,200 Oc. $230,100 Od. $278,421 Schedule of Activity Costs Quality Control Activities Activity Cost Process audits $48,100 Training of machine operators 25,200 Processing returned products 16,800 Scrap processing (disposal) 24,100 Rework 5,700 Preventative maintenance 30,400 Product design 40,100 Warranty work 7,200 Finished goods inspection 22,500 From the provided schedule of activity costs, determine the external failure costs. Oa. $24,000 Ob. $79,000 Oc. $53,800 Od. $19,200