Simplify the Expression $\sqrt [ 3 ] { \frac { 6 } { 7 } }$

Multiple Choice

Simplify the expression. Assume all variables represent positive real numbers.
- $\sqrt [ 3 ] { \frac { 6 } { 7 } }$

A) $\frac { \sqrt [ 3 ] { 294 } } { 7 }$
B) $\frac { 294 } { 7 }$
C) $\frac { \sqrt [ 3 ] { 42 } } { 7 }$
D) $\frac { \sqrt [ 3 ] { 2058 } } { 7 }$