Estimated Demand for a Good Is $\hat { Q } = 25 - 5 P + 0.32 M + 12 P _ { R }$

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.The coefficient on P

A) does not have the expected sign.
B) is negative as expected.
C) should have the same sign as the coefficient on $P _ { R }$ .
D) should not be greater than one (in absolute value) .
E) both b and d