Use the Rule for Exponents to Simplify the Following Expression $\left( 5 x ^ { 3 } \right) ^ { 3 }$

Multiple Choice

Use the rule for exponents to simplify the following expression. $\left( 5 x ^ { 3 } \right) ^ { 3 }$

A) $15 x ^ { 9 }$
B) $125 x ^ { 9 }$
C) $126 x ^ { 9 }$
D) $131 x ^ { 7 }$
E) $125 x ^ { 8 }$