Multiple-Choice Exercise 6-6 Morgenstern Ltd. has the following units and costs for the month of April. 1. Beginning inventory, April 1st, 1,000 units at $20 (cost) 2. Purchase (1) April 9, 1,200 units at $23 (cost) 3. Sold, April 12 2,100 units at $40 (retail) 4. Purchase (2), April 22 800 units at $25 (Cost) If Morgenstern uses a perpetual inventory system, what is the cost of ending inventory under FIFO at April 30? a. $18,000 b. $22,300 c. $45,300 d. $49,600