15 Acme Company began business and made the following four inventory purchases in June: per unit cost June 1 June 10 June 15 June 28 150 units 200 units 200 units 150 units $10 11 13 14 The company uses a periodic inventory system. A physical count of merchandise inventory on June 30 reveals that there are 210 units on hand. The inventory method which results in the highest gross profit for June is

Acme Company began business and made the following four inventory purchases in June: per i The company uses a periodic inventory system. A physical count of merchandise inventory on June 30 reveals that there are 210 units on hand. The inventory method which results in the highest gross profit for June is