Table 2.2 -Julianne Runs a Business and Needs to Decide How Many

Multiple Choice

Table 2.2
-Julianne runs a business and needs to decide how many hours to stay open.Table 2.2 illustrates her marginal costs of staying open for each additional hour.Suppose that we observe Julianne staying open 2 hours per day.If she is following the marginal principle,what must her marginal benefit be?

A) $8
B) $12
C) $20
D) $22