Quality Control Activities Activity Cost Process audits $51,000 Training of machine operators 29,300 Processing returned products 19,600 Scrap processing (disposal) 24,000 Rework 6,100 Preventative maintenance 28,300 Product design 45,000 Warranty work 8,400 Finished goods inspection 23,400 From the above schedule of activity costs, determine the internal failure costs. a.$24,080 b.$58,100 c.$103,100 d.$30,100