The following represents the financial information for Domingo Corporation for two months: March April Sales revenue Costs $550,000 $390,000 Process inspection Scrap Quality training Warranty repairs Product testing equipment Customer complaints $ 1,550 $1,860 1,930 20,200 13,200 5,000 6,700 3,200 17,000 8,900 4,500 1,940 4,400 7,000 2,800 18,000 15,100 5,600 Preventive maintenance Materials inspection Field testing 9,200 12,70 Required a. Classify these items into Prevention, Appraisal, Internal failure, or External failure costs. 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, intemal 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 ril Prevention Internal failure External failure