Swanson plans to sell 10,000 units of a particular product during July, and expects sales to increase at the rate of 10% per month during the remainder of the year. The June 30 and September 30 ending inventories are anticipated to be 1,100 units and 950 units, respectively. On the basis of this information, how many units should Swanson purchase for the quarter ended September 30?

A. 31,850.

B. 32,150.

C. 32,950.

D. 33,250.

E. Some other amount

.