XYZ Inc. had the following transactions for August: On August 1 it purchased 2 inventory items for $4 each On August 10 it purchased 3 inventory items for $3.75 each On August 15, 2015, it sold 1 item for $8 each On August 20 it purchased 3 more inventory items for $4.25 each. On August 25 it sold 3 items for $8.20 each. Calculate the cost of Goods sold using FIFO. a. $15.75 b. $32.60 C. $31 d. $15.50 I O 23