Scenario 4.4: the Demand Curve for the New Computer Game, Rock and Rock

Scenario 4.4:
The demand curve for the new computer game, Rock and Roll Trivia, is given as follows:
Q = 200 - 5P - .1Pc - .5Pd + .2A - I
where P is the price of the game
Pc is the price of a computer
Pd is the price of a diskette
A is the level of advertising
Q is the level of income
-See the information in Scenario 4.4. Does the demand curve for Rock and Roll Trivia slope downward?

A) Yes it does.
B) No it does not.
C) More information is needed to answer this question.