The Marigold Computer Shop begins operations on June 1 and uses a periodic inventory system. During June, the company had the following purchases for its Model 10 Fastback Computer System: Purchases Date Units Units Cost June 1 4 $2000 9 11 $2500 On June 30 an inventory count showed there were 7 units on hand. Using the FIFO inventory cost formula, the amount allocated to cost of goods sold for June is O $16000. O $18000. $14000. O $17500