A retailer uses a first-in, first-out cost determination method in a perpetual inventory system. For the current month, the following purchase and sales transactions occurred: Date Description Units Total Selling Cost Price Mar. 1 Opening inventory 150 $900 Mar. 3 Purchase 100 $600 Mar. 5 Sale 160 $17/unit Mar. 13 Purchase 150 $1,380 Mar. 28 Sale 90 $17/unit For each of the following type the dollar amount (nearest dollar without dollar sign (5) or comma, eg. 15000)? Mar. 5 cost of goods sold Mar. 13 cost of goods sold