The Following Question Are Based on the Following Cost and Revenue

The following question are based on the following cost and revenue schedule for the Presto Piano Company:

-If the firm finds that the market price per unit of output is $800,it should produce between ________ units per period.

A) 1 and 2
B) 2 and 3
C) 3 and 4
D) 4 and 5
E) 5 and 6