If $A $ is a square matrix, such that $ A^2 = A $ , then $ (1 + A )^3 - 7A $ is equal to:

Question

\[ (A) \: A   \qquad\qquad (B) \: I - A    \qquad\qquad (C)   \: 1   \qquad\qquad  (D) \: 3A   \]