During January, a company that uses a perpetual inventory system had beginning inventory, purchases, and sales as follows: Beginning Inventory 100 units at $10 per unit 40 units at $12 per unit Jan. 5 Purchase Jan 15 Purchase 70 units at $13 per unit Jan. 10 Sale 60 units Jan. 25 Sale 50 units Using LIFO, cost of goods sold at Jan. 10 was O $600 None of the answers are correct. $880 $1.030 $780