A company's inventory records report the following: Date Activities August 1 August 5 Beginning inventory Purchase August 12 August 15 Purchase Sales Units Acquired at Cost 15 units @ $30 =$450 10 units 20 units $32 = $640 Units Sold at Retail $31 = $310 30 units sold Using the FIFO perpetual inventory method, what is the value of the inventory at August 15 after the sale? Multiple Choice $920 $1,400 $250 $480 $320