The units of an item available for sale during the year were as follows:

Jan. 1	Inventory	42 units @ $180 per unit
Apr. 10	Purchase	58 units @ $195 per unit
Sept. 30	Purchase	20 units @ $204 per unit
Dec. 12	Purchase	30 units @ $210 per unit

There are 37 units of the item in the physical inventory at December 31. The periodic inventory system is used. Determine the inventory cost and the cost of merchandise sold by three methods, presenting your answers in the following form:

Cost
Inventory Method	Merchandise Inventory	Merchandise Sold
a. First-in, first-out method	$	$
b. Last-in, first-out method	$	$
c. Average cost method	$	$