Merrimaid Plans to Sell 1,100 Units of a Particular Product

Merrimaid plans to sell 1,100 units of a particular product during July, and expects sales to increase at the rate of 5% per month during the remainder of the year. The June 30 and September 30 ending inventories are anticipated to be 100 units and 50 units, respectively. On the basis of this information, how many units should Merrimaid purchase for the quarter ended September 30? Round to the nearest whole dollar.

A) 3,415.
B) 3,418.
C) 3,468.
D) 3,518.
E) 3,618.