The following data was available to you about Al-Aman Company during the month of 1/2020 Initial stock 1/1 Number of units 1000 Unit price 12 Purchases 1/6 Number of units 500 Unit price 14 Sales 1/10 Number of units 800 and unit price 25 Purchases 1/18 Number of units 300 Unit price 18 Sales 1/27 Number of units 750 Unit price 30 Required: the cost of inventory at the end of the month using the last-in, first-out method (LIFO) and weighted average (WA) if you know that the company uses the perpetual inventory system