Sunland Company began the year with 9 units of marine floats at a cost of $ 11 each. During the year, it made the following purchases: May 5, 28 unit at $ 16; July 16, 19 units at $ 19; and December 7, 24 units at $ 23. Assume there are 36 units on hand at the end of the period. Sunland uses the periodic approach. A)Determine the cost of goods sold under LIFO. B)Determine the cost of goods sold under FIFO. C)Average unit cost