Simplify the Radical Expression $\sqrt{144 x^{2}}$ A) $144 \mathrm{x}$ B) - 12|x|
C)

Multiple Choice

Simplify the radical expression. If appropriate, include absolute values.
- $\sqrt{144 x^{2}}$

A) $144 \mathrm{x}$
B) - 12|x|
C) $12 x$
D) $12|x|$