January 1 inventory balance 100 units at $10 per unit March 2 purchase 50 units at $11 per unit July 8 purchase 80 units at $10 per unit November 15 purchase 30 units at $12 per unit On December 31, a physical count reveals 80 units in ending inventory. Referring to Table 6-2, assuming all goods are sold throughout the year for $19 per unit, gross margin calculated under the periodic FIFO method would be: O A. $1,510 O B. $1,260. OC. $1,570. OD. $1,620