Question Four: muelson and Messenger (S&M) began 2016 with 200 units of its one product. These units were urchased near the end of 2015 for $25 each. During the month of January, 100 units were nurchased on January 8 for $28 each and another 200 units were purchased on January 19 for each. Sales of 125 units and 100 units were made on January 10 and January 25, respectively There were 275 units on hand at the end of the month. S&M uses a perpetual inventory system. Calculate cost of goods sold and ending inventory for January using FIFO