Solve the Problem $D(p)=-3 p^{2}+7 p+7$ , Where $p$ Represents the Price of the Item

Multiple Choice

Solve the problem.
-Suppose the demand for a certain item is given by $D(p) =-3 p^{2}+7 p+7$ , where $p$ represents the price of the item. Find $\mathrm{D}^{\prime}(3)$ .

A) 10
B) 3
C) -4
D) -11