If Fixed Costs Are 30, Variable Costs Per Unit Are

Multiple Choice

If fixed costs are 30, variable costs per unit are Q + 3, and the demand function is P + 2Q = 50
Which of the following gives the formula for the associated profit?

A) 47Q - 2Q2 + 33
B) 47Q - 3Q2 - 30
C) 49Q - 2Q2 + 33
D) 49Q - 2Q2 - 33
E) 53Q - 3Q2 + 30