6:34 410 value: 14.00 points 15% Viper Company began year 2020 with 29,000 units of product in its January 1 inventory costing $16.80 each. It made successive purchases of its product in year 2020 as follows. The company uses a periodic inventory system. On December 31, 2020, a physical count reveals that 53,000 units of its product remain in inventory. Mar. May Aug. 7 46,000 units @$19.80 each 25 48,000 units @ $23.80 each 1 38,000 units @$25.80 each Nov. 10 42,000 units @ $28.80 each Required: 1. Compute the number and total cost of the units available for sale during in year 2020. 2. Compute the amounts assigned to 2020 ending inventory and the cost of goods sold using (a) FIFO and (b) weighted average cost