13. At the end of January, Mineral Labs had an inventory of 775 units, which cost $12 per unit to produce. During February, the company produced 900 units at a cost of $16 per unit. If the firm sold 1,500 units in February, what was the cost of goods sold? a. Assume LIFO inventory accounting. b. Assume FIFO inventory accounting. Cost of goods sold-LIFO and FIFO (LO4-2)