Data: Units Unit Cost Total Cost Inventory Mar 1 280 14 3920 Sale Mar 3 70 Purchase Mar 14 140 30 4200 Sale Mar 16 145 1. Answer the following questions using the perpetual system for inventory. Round to 2 decimal places if necessary: A. What is the weighted average per unit after the Mar 14 purchase? fill in the blank 1 B. What is the Cost of Goods sold on Mar 16? fill in the blank 2 2. Complete the chart with total costs using perpetual FIFO and LIFO Perpetual FIFO Perpetual LIFO Mar 3 COGS fill in the blank 3 fill in the blank 4 Mar 16 COGS fill in the blank 5 fill in the blank 6 Ending Inventory fill in the blank 7 fill in the blank 8