At May 1, 2020, Marigold Company had beginning inventory consisting of 160 units with a unit cost of 39.00. Durine May. the company purchased inventory as follows 800 units at $9.00 640 units at $10.00 The company sold 820 units during the month for $14 per unit Marigold uses the average cost method. The average cost per unit for May is $9.400 59.000 O $9.500 10.000