Sandy Company had 500 units of "Dink" in its inventory at a cost of $5 each. It purchased, for $2,400, 300 more units of "Dink". Sandy then sold 600 units at a selling price of $10 each, resulting in a gross profit of $2,700. The cost flow assumption used by Sandy Company 1) cannot be determined from the information given. 2) is weighted average. 3) is specific identification. 4) is FIFO