Schedule of Activity Costs Quality Control Activities Process audits Training of machine operators Processing returned products Scrap processing (disposal) Rework Preventative maintenance Product design Warranty work Finished goods inspection Activity Cost $50,000 28,000 19,000 25,000 8,000 30,000 46,000 2,000 23,000 From the above schedule of activity costs, determine the appraisal costs a. $23,000 Ob. $50,000 O c. $73,000 d. $104,000