Simplify the Expression $$\sqrt { 384 x ^ { 2 } }$$

Multiple Choice

Simplify the expression. Assume all variables represent positive real numbers.
- $$\sqrt { 384 x ^ { 2 } }$$

A) $8 \times \sqrt { 6 }$
B) $8 \sqrt { 6 x }$
C) $6 x ^ { 2 } \sqrt { 8 }$
D) $384 x$