Simplify Remember That We Have Assumed That Radicands Do Not $\sqrt{z^{2}-10 z+25}$

Multiple Choice

Simplify. Remember that we have assumed that radicands do not represent the square of a negative number.
- $\sqrt{z^{2}-10 z+25}$

A) $\sqrt{z}-\sqrt{|-5|}$
B) $(z-5) ^{2}$
C) $\sqrt{z}+\sqrt{|-5|}$
D) $\mathrm{z}-5$