[The following information applies to the questions displayed below.] Acme Materials Company manufactures and sells synthetic coatings that can withstand high temperatures. Its primary customers are aviation manufacturers and maintenance companies. The following table contains financial information pertaining to cost of quality (COQ) in 2019 and 2020 (in thousands of dollars): 2019 2020 Sales $ 15,900 $ 19,900 Materials inspection 290 59 In-process (production) inspection 159 124 Finished product inspection 240 69 Preventive equipment maintenance 19 59 Scrap (net) 490 290 Warranty repairs 690 440 Product design engineering 149 260 Vendor certification 21 59 Direct costs of returned goods 265 79 Training of factory workers 39 139 Product testingequipment maintenance 59 59 Product testing labor 200 89 Field repairs 69 39 Rework before shipment 230 199 Product-liability settlement 350 59 Emergency repair and maintenance 190 74 Required: 1. Classify the cost items in the table into cost-of-quality (COQ) categories. 2. Calculate the ratio of each COQ category to revenues in each of the 2 years. 3. Calculate the percentage change in each COQ category and total COQ and comment on the results: a. Percentage change in total COQ as a percentage of sales, from 2019 to 2020; b. Total COQ in 2020 expressed as a percentage of 2019 sales dollars; c. Percentage change in total prevention costs, 2019 to 2020; d. Percentage change in total appraisal costs, 2019 to 2020; e. Percentage change in total internal failure costs, 2019 to 2020; f. Percentage change in total external failure costs, 2019 to 2020.