Units Unit Cost Beginning inventory. 340 $45 Purchase: April 6 410 44 Sale: May 4 280 Purchase: July 19 440 41 Sale: September 9 550 Purchase: October 10 270 40 Clark uses the perpetual inventory system and the FIFO method. Required: Using FIFO (a) Compute the cost of ending inventory. (b) Compute the cost of goods sold for the year