Elsa Inc. starts the year with a beginning inventory of 420 units at $17 per unit. Elsa Inc. purchases 560 units at $28 each in February and 440 units at $18 each in October. Elsa Inc, sells 210 units during the year. Elsa Inc. has a periodic inventory system and uses the FIFO inventory costing method. What is the amount of cost of goods sold? Multiple Choice $5,880 O O $3,814 $3,570 O o $3,780