Simplify by First Converting to Rational Exponents $\sqrt{z^{10}}$ A) $z^{5}$ B) $\frac{z}{2}$ C) $z^{20}$

Multiple Choice

Simplify by first converting to rational exponents. Assume that all variables represent positive real numbers.
- $\sqrt{z^{10}}$

A) $z^{5}$
B) $\frac{z}{2}$
C) $z^{20}$
D) $2 \mathrm{z}$