Let $f ( x ) = - x ^ { 3 } - 6 x ^ { 2 } - 9 x + 1$

Multiple Choice

Let $f ( x ) = - x ^ { 3 } - 6 x ^ { 2 } - 9 x + 1$ Then ƒ has a relative minimum at x =

A) -3
B) -2
C) -1
D) 0
E) 2