Write the Expression in Exponential Form $\sqrt [ 3 ] { x ^ { 13 } }$

Multiple Choice

Write the expression in exponential form. Assume that all variables represent positive real numbers.
- $\sqrt [ 3 ] { x ^ { 13 } }$

A) $x ^ { 9 / 13 }$
B) $x ^ { - 13 / 9 }$
C) $x ^ { 13 / 9 }$
D) $x ^ { 4 }$