the following units of an inventory item were available for sale durning 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. durning the year, 60 units of the item were sold.

The ending inventory cost using FIFO is

a. $1375

b. $1350

c.$1250

d. $1150