The units of Manganese Plus available for sale during the year were as follows:

Mar. 1	Inventory	21 units	@ $32	$672
June 16	Purchase	27 units	@ $34	918
Nov. 28	Purchase	43 units	@ $37	1,591
		91 units		$3,181

There are 17 units of the product in the physical inventory at November 30. The periodic inventory system is used. Round answers to the nearest whole dollar.

a. Determine the inventory cost by the FIFO method. $

b. Determine the inventory cost by the LIFO method. $

c. Determine the inventory cost by the average cost methods. $