Taxes, unemployment, and inflation that affects retail business are O a. Economic factors O b. Competitive factors Oc. Technology factors O d. Environment factors National Gift Market purchased Coffee makers in August 2020. The shop sold 40 Coffee makers in August. Calculate the cost of goods sold using LIFO method. Purchases No of Coffee makers purchased Cost/Unit 10 12 August 7 August 18 August 27 20 11 15 13 O a. RO 65 O b. RO 470 OC. RO 475 O d. RO 60