Simplify Remember That We Have Assumed That Radicands Do Not $\sqrt{49 x^{2}}$

Multiple Choice

Simplify. Remember that we have assumed that radicands do not represent the square of a negative number.
- $\sqrt{49 x^{2}}$

A) $49 x$
B) $7 x^{2}$
C) $7 \mathrm{x}$
D) $-7 \mathrm{x}$