The following lots of a particular commodity were available for sale during the year

Beginning inventory	8 units at $51
First purchase	17 units at $50
Second purchase	24 units at $26
Third purchase	18 units at $65

The firm uses the periodic system, and there are 22 units of the commodity on hand at the end of the year. What is the ending inventory balance at the end of the year rounded to nearest dollar according to the average cost method? Do not round intermediate calculations.

a. $1,108

b. $1,274

c. $1,122

d. $1,002