Problem B - 20 points Beginning inventory, purchases, and sales data for widgets are as follows: Mar. 3 11 14 21 25 Inventory Purchase Sale Purchase Sale 12 units@$15 13 units@$17 18 units 9 units@ $20 10 units Assuming the business maintains a perpetual inventory system, complete the inventory cards and calculate the cost of goods sold and ending inventory under the following assumptions: (a) First-in, first-out Cost of Merchandise Sold Purchases Inventory Unit Total Date Qty. Cost Cost Qty. Cost Cost Qty. Unit Cost Total Cost 3 25 Balances (b) Last-in, first-out Purchases Inventory Cost of Merchandise Sold Unit Cost Total Cost Unit Cost Total Cost Unit Cost Total Cost Qty. Qty. Qty. Date Mar. 3 11 Balances