At May 1, 2015, Kibbee Company had beginning inventory consisting of 200 units with a unit cost of $7. During May, the company purchased inventory as follows:
800 units at $7
600 units at $8
The company sold 1,000 units during the month for $12 per unit. Kibbee uses the average cost method. The value of Kibbee's inventory at May 31, 2015 is
A. $3,000.
B. $7,500.
C. $4,500.
D. $4,425.