Test the Equation $y = 9 x ^ { 3 } + 5 x$

Multiple Choice

Test the equation $y = 9 x ^ { 3 } + 5 x$ for symmetry.

A) The symmetry is around the point $( 5,5 )$ .
B) There is no symmetry.
C) The symmetry is around the $x$ -axis.
D) The symmetry is around the $y$ -axis.
E) The symmetry is around the origin.