Table 13-13 Teacher's Helper Is a Small Company That Has a Subcontract

Multiple Choice

Table 13-13
Teacher's Helper is a small company that has a subcontract to produce instructional materials for disabled children in public school districts. The owner rents several small rooms in an office building in the suburbs for $600 a month and has leased computer equipment that costs $480 a month.
-Refer to Table 13-13. What is the marginal cost of creating the tenth instructional module in a given month?

A) $900
B) $1,250
C) $2,500
D) $3,060