Simplify Remember That We Have Assumed That Radicands Do Not $\sqrt{(15 y)^{2}}$

Multiple Choice

Simplify. Remember that we have assumed that radicands do not represent the square of a negative number.
- $\sqrt{(15 y) ^{2}}$

A) $225 y^{2}$
B) $\mathrm{y}$
C) $225 y$
D) $15 y$