Blossom Company began the year with 9 units of marine floats at a cost of $10 each. During the year, it made the following purchases: May 5, 24 unit at $16; July 16, 19 units at $20; and December 7,24 units at $23. Assume there are 28 units on hand at the end of the period. Blossom uses the periodic approach. (a) Determine the cost of goods sold under FIFO