Find All Rational Zeros of the Polynomial Function $$f ( x ) = - 2 x ^ { 3 } - 4 x ^ { 2 } + 2 x + 4$$

Multiple Choice

Find all rational zeros of the polynomial function.
- $$f ( x ) = - 2 x ^ { 3 } - 4 x ^ { 2 } + 2 x + 4$$

A) $1,2 , - 1$
B) $- 1,2 , - 1$
C) $- 1 , - 2,1$
D) $1 , - 2,1$