Write with Positive Exponents $\frac { 7 } { 6 x ^ { - 2 / 7 } }$

Multiple Choice

Write with positive exponents. Simplify if possible.
- $\frac { 7 } { 6 x ^ { - 2 / 7 } }$

A) $42 x ^ { 2 / 7 }$
B) $\frac { 6 x ^ { 2 / 7 } } { 7 }$
C) $\frac { 7 x ^ { 2 / 7 } } { 6 }$
D) $\frac { 36 ^ { 1 / 7 } x ^ { 2 / 7 } } { 7 }$