Simplify the Expression $\sqrt { \frac { 49 } { 2 } }$

Multiple Choice

Simplify the expression. Assume all variables represent positive real numbers.
- $\sqrt { \frac { 49 } { 2 } }$

A) $\frac { 7 \sqrt { 2 } } { 2 }$
B) 11
C) $\frac { 49 \sqrt { 2 } } { 2 }$
D) $7 \sqrt { 2 }$