Answer:
ABC company uses the average cost method
Step-by-step explanation:
beginning inventory 500 units at $4 = $2,000
purchased 300 units at $9.33 = $2,800
sold 400 units at $10 = $4,000 ⇒ gross profit = $1,600
under LIFO, cost of goods sold = $2,800 + $400 = $3,200, gross profit = $800
under FIFO, cost of goods sold = $1,600, gross profit = $2,400
under average cost, cost of goods sold = ($4,800 / 800) x 400 = $2,400, gross profit = $1,600