There was no beginning inventory. During July, James Company made the following purchases - July 3rd 20 units @ $12, July 11th 20 units @$13, July 20th 10 units @ $15. They made the following sales - July 13th 25 units and July 22nd 10 units. Under the perpetual average cost method, the per unit value of ending inventory is: $202.50 $13.33 $13.50 O $12.50