The following represents the financial information for Domingo Corporation for two months:

Required
a. Classify these items into prevention (P), appraisal (A), internal failure (IF), or external failure (EF) costs.
b. Calculate the ratio of the prevention, appraisal, internal failure, and external failure costs to sales for March and April.

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March April $490,000 $440,000 Costs Process nspection Quality training 1,850 19,800 A,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 Field testing. .