Ecology Co Ending Inventory for Each Month Should Be 20% of the the Following

Multiple Choice

Ecology Co.sells a biodegradable product called Dissol and has predicted the following sales for the first four months of the current year:
$\begin{array}{ccccc} & \text { Jan. } & \text { Feb. } & \text { March } & \text { April } \\\text { Sales in units } & 1,700 & 1,900 & 2,100 & 1,600\end{array}$

Ending inventory for each month should be 20% of the next month's sales,and the December 31 inventory is consistent with that policy.How many units should be purchased in February?

A) 1,860
B) 1,900
C) 1,940
D) 1,980
E) 2,320