Simplify Write the Answer in Exponential Form Without Negative Exponents $x ^ { - 1 / 5 } x ^ { - 5 / 3 }$

Multiple Choice

Simplify. Write the answer in exponential form without negative exponents.
- $x ^ { - 1 / 5 } x ^ { - 5 / 3 }$

A) $\frac { 1 } { x ^ { 15 / 28 } }$
B) $\frac { 1 } { x ^ { 28 / 15 } }$
C) $x ^ { 1 / 3 }$
D) $\frac { 1 } { x ^ { 1 / 3 } }$