Call-Mart Inc. had the following transactions in its first month (March) of operations Date Purchases Sold Balance March 2 2,000 @ $5.00 2,000 units March 15 6,000 @ $5.50 8,000 units March 19 4,000 units 4,000 units March 30 2,000 @ $6.00 6,000 units Determine the Cost of Goods Sold by using both FIFO and LIFO (for both perpetual and periodic system).