Blossom Marine Products began the year with 10 units of marine floats at a cost of $9.00 each. Duting the year, it made the following purchases: May 5,30 units at $13.00; July 16,15 units at $15.00; and December 7.20 units at $18.00. Assuming there are 25 units on hand at the end of the period, determine the cost of goods sold under (a) FIFO, (b) LIFO, and (c) average. cost. Blossom uses the periodic approach