Solve the Inequality and Write the Solution Set in Interval $5 x ^ { 3 } - 20 x ^ { 2 } > 0$

Solve the inequality and write the solution set in interval notation.
$5 x ^ { 3 } - 20 x ^ { 2 } > 0$

A) $( 4 , \infty )$
B) $( - 4 , - \infty )$
C) $( - 4 , \infty )$
D) $( 4 , - \infty )$
E) $( - \infty , 5 )$