Refer to the Following:
the Estimated Demand for a Good $$\hat { Q } = 25 - 5 P + 0.32 M + 12 P _ { R }$$

Multiple Choice

Refer to the following:
The estimated demand for a good is

$$\hat { Q } = 25 - 5 P + 0.32 M + 12 P _ { R }$$
where Q is the quantity demanded of the good, P is the price of the good, M is income, and
$P _ { R }$ is the price of related good R.
-If income decreases by $1,000, all else constant, quantity demanded will ________ by _________ units.

A) decrease; 320 units.
B) increase; 3.2 units
C) decrease; 1200 units
D) increase; 500 units
E) increase; 500 units.