Wildhorse Marine Products began the year with 10 units of marine floats at a cost of $14.00 each. During the year, it made the following purchases: May 5, 30 units at $20.40: July 16, 15 units at $25.00; and December 7,20 units at $30.50. 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. Wildhorse uses the periodic approach. FIFO LIFO $ Average-cost $ Cost of Goods Sold