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

Multiple Choice

Let $f ( x ) = 2 x ^ { 3 } + 3 x + 1$ Find $X$ if $f ^ { - 1 } ( x ) = - 1$

A) 3/2
B) -4
C) 0
D) 4