Refer to the Following:
the Market Demand for a Monopoly $Q _ { d } = 100,000 - 500 P + 2 M + 5000 P _ { R }$

Multiple Choice

Refer to the following:
The market demand for a monopoly firm is estimated to be:
$Q _ { d } = 100,000 - 500 P + 2 M + 5000 P _ { R }$
where
$Q _ { d }$ is quantity demanded, P is price, M is income, and
$P _ { R }$ is the price of a related good. The manager has forecasted the values of M and
$P _ { R }$ will be $50,000 and $20, respectively, in 2015.
-For 2015, the marginal revenue function is

A) MR = 290 - 0.5P.
B) MR = 580 - 0.001Q.
C) MR = 290 - 0.002Q.
D) MR = 600 - 0.004Q.
E) none of the above