Rationalize the Denominator and Simplify Completely $\sqrt { \frac { x ^ { 3 } } { 19 } }$

Multiple Choice

Rationalize the denominator and simplify completely. $\sqrt { \frac { x ^ { 3 } } { 19 } }$

A) $\frac { \sqrt { x ^ { 3 } } } { \sqrt { 19 } }$
B) $\frac { \sqrt { 19 x ^ { 3 } } } { 19 }$
C) $\frac { x \sqrt { 19 x } } { 19 }$
D) $\frac { x \sqrt { x } } { \sqrt { 19 } }$