Let $f ( x ) = 2 x ^ { 3 } - 15 x ^ { 2 } - 36 x - 2$

Multiple Choice

Let $f ( x ) = 2 x ^ { 3 } - 15 x ^ { 2 } - 36 x - 2$ Then ƒ has a relative minimum at x =

A) 2
B) 4
C) 6
D) 8
E) 10