Simplify Assume That All Variables Represent Positive Real Numbers $\frac { \sqrt { 1008 x ^ { 7 } } } { \sqrt { 7 x } }$

Multiple Choice

Simplify. Assume that all variables represent positive real numbers.
- $\frac { \sqrt { 1008 x ^ { 7 } } } { \sqrt { 7 x } }$

A) $12 \sqrt { x ^ { 7 } }$
B) $12 x ^ { 6 }$
C) $12 x ^ { 3 } \sqrt { 7 }$
D) $12 x ^ { 3 }$