The following units of an inventory item were available for sale during the year: Beginning inventory 10 units at $55 First purchase 25 units at $60 Second purchase 30 units at $65 Third purchase 15 units at $70 The firm uses the periodic inventory system. During the year, 60 units of the item were sold. The value of ending inventory using FIFO is O a. $1,150 O b. $1,250 O c. $1,350 O d. $1,375