Raise to the Power or Find the Root $\left( \frac { 64 x ^ { 3 } } { 216 } \right) ^ { 4 / 3 }$

Multiple Choice

Raise to the power or find the root. Assume that all variables represent positive numbers. Write with only positive
exponents.
- $\left( \frac { 64 x ^ { 3 } } { 216 } \right) ^ { 4 / 3 }$

A) $\frac { 256 x ^ { 4 } } { 1296 }$
B) $\frac { 64 x ^ { 4 } } { 216 }$
C) $\frac { 64 x ^ { 13 / 3 } } { 216 }$
D) $\frac { 4 x } { 6 }$