Solve the Inequality $36 x - x ^ { 3 } < 0$

Multiple Choice

Solve the inequality $36 x - x ^ { 3 } < 0$ and write the solution set in interval notation.

A) $( - \infty , - 6 ) \cup ( 0,6 )$
B) $( - 6,6 )$
C) $( - \infty , 6 )$
D) $( - 6,0 ) \cup ( 6 , \infty )$
E) $( - \infty , \infty )$