The following represents the financial information for Domingo Corporation for two months: March $490,000 April $440,000 $ $ Sales revenue Costs Process inspection Scrap Quality training Warranty repairs Product testing equipment Customer complaints Rework Preventive maintenance Materials inspection Field testing 1,650 1,850 19,800 4,300 7,000 2,800 17,000 13,500 6.500 9,400 1,880 1,930 13,000 4,800 7,000 3,400 18,500 9,500 4.800 12,400 Required: a. Classify these items into Prevention, Appraisal, Internal failure, or External failure costs. Category Activity Process inspection Scrap Quality training Warranty repairs Product testing equipment Customer complaints Rework Preventive maintenance Materials inspection Field testing b. Calculate the ratio of the prevention, appraisal, internal failure, and external failure costs to sales for March and April. (Enter your answers as a percentage rounded to 1 decimal place (i.e., 32.1).) March April Prevention Appraisal Internal failure External failure