The following lots of Commodity Z were available for sale during the year. Beginning inventory 12 units at $48 First purchase 15 units at $50 Second purchase Third purchase 25 units at $56 14 units at $59 The firm uses the periodic system, and there are 27 units of the commodity on hand at the end of the year. What is the ending inventory balance at the end of the year according to the FIFO method? a. $3,552 O b. $3,525 O c. $1,296 O d. $1,554