3) Inventory data for Williams Door Products Corporation for the month of October are as follows: Merchandise inventory, October 1​50 units at $150 each October 8 purchase​​​50 units at $155 each...

3) Inventory data for Williams Door Products Corporation for the month of October are as follows:

Merchandise inventory, October 1​50 units at $150 each

October 8 purchase​​​50 units at $155 each

October 15 purchase​​​55 units at $160 each

October 22 purchase​​​60 units at $170 each

October 29 purchase​​​55 units at $175 each

During the month of October, Williams sold 250 units.

Required:

Compute the ending inventory balance on October 31 using:

a. FIFO

b. LIFO

c. Average-cost