Given the following information, determine the cost of goods sold for December 31 using the FIFO periodic inventory method: December 2: 5 units were purchased at $7 per unit. December 9: 10 units were purchased at $9.40 per unit. December 11: 12 units were sold at $35 per unit. December 15: 20 units were purchased at $10.15 per unit. December 22: 18 units were sold at $35 per unit. O $284.70 O $282.15 $281.25 O $332.10 O $297.00