If Demand Is Estimated to Be $Q _ { d }$

Multiple Choice

If demand is estimated to be $Q _ { d }$ = 240 - 6P,the inverse demand function is

A) P = 40 - 0.1667Q.
B) P = 240 - Q.
C) $Q _ { d }$ = 40 - P.
D) $Q _ { d }$ = 240 -12P.
E) $Q _ { d }$ = 240 - 3P.