Mckinley, inc's inventory records for a particular development program show the following on march 31:

- March 1: beginning inventory 6 units @ $165 = 990

- March 15: purchase 5 units @ $166 = 830

- March 26: purchase 9 units @ $175 = 1,575

1. compute cost of goods sold and ending inventory, using each of the following methods:

a) specific unit cost, with two $165 units and six $175 units still on hand at the end.

b) average cost

c) first- in, first-out (FIFO)

d) last-in, first-out (LIFO)