Consider the Following Total Cost Schedule for a Perfectly Competitive

Multiple Choice

Consider the following total cost schedule for a perfectly competitive firm producing ball-point pens.
TABLE 9-3
-Refer to Table 9-3.Suppose the prevailing market price for this firm's product is $0.40.The profit-maximizing level of output for this firm is between

A) 0 and 10 units.
B) 10 and 20 units.
C) 20 and 30 units.
D) 30 and 40 units.
E) 40 and 50 units.