Simplify the Expression $\sqrt { 175 x ^ { 2 } }$

Multiple Choice

Simplify the expression. Assume all variables represent positive real numbers.
- $\sqrt { 175 x ^ { 2 } }$

A) $7 x ^ { 2 } \sqrt { 5 }$
B) $5 \sqrt { 7 x }$
C) $5x \sqrt { 7 }$
D) $175 \mathrm { x }$