Give the Equation of the Function G Whose Graph Is $f ( x ) = x ^ { 3 } - 3 x ^ { 2 } + 2 x + 1$

Multiple Choice

Give the equation of the function g whose graph is described.
-The graph of $f ( x ) = x ^ { 3 } - 3 x ^ { 2 } + 2 x + 1$ is reflected across the $y$ -axis .

A) $g ( x ) = - x ^ { 3 } - 3 x ^ { 2 } - 2 x + 1$
B) $g ( x ) = - x ^ { 3 } - 3 x ^ { 2 } - 2 x - 1$
C) $g ( x ) = - x ^ { 3 } + 3 x ^ { 2 } - 2 x - 1$
D) $g ( x ) = x ^ { 3 } + 3 x ^ { 2 } + 2 x + 1$