3. Ecology Co. sells a blodegradable product called Dissol and has predicted the following sales for the first four months of the current year Jan Feb March Apri n units 2.500 3100 3,700 2.800 Ending inventory for each month should be 15% of the next month's sales, and the December 31 inventory is consistent with that policy. How many units should be purchased in February? O 3.010 3,100 3190 O 2.830 O 3700