Refer to the Following:
a Price-Setting Firm Faces the Following $Q _ { d } = 800,000 - 2,000 P + 0.7 M + 4,000 P _ { R }$

Refer to the following:
A price-setting firm faces the following estimated demand and average variable cost functions:
$Q _ { d } = 800,000 - 2,000 P + 0.7 M + 4,000 P _ { R }$
$A V C = 500 - 0.03 Q + 0.000001 Q ^ { 2 }$
where
$Q _ { d }$ is the quantity demanded, P is price, M is income, and
$P _ { R }$ is the price of a related good. The firm expects income to be $40,000 and
$P _ { R }$ to be $53. Total fixed cost is $2,600,000.
-What is the estimated demand function for the firm?

A) $Q _ { d }$ = 1,040,000-2,000P
B) $Q _ { d }$ = 800,000 - 4,000P
C) $Q _ { d }$ = 800,000- 500P
D) $Q _ { d }$ = 1,600,000- 2,000P