Simplify the Radical Expression $\sqrt{\frac{81}{16}}$ A) $\frac{\sqrt{9}}{4}$ B) $\frac{\sqrt{9}}{\sqrt{4}}$ C) $\frac{9}{4}$ D) 2

Multiple Choice

Simplify the radical expression. Indicate if the expression is not a real number.
- $\sqrt{\frac{81}{16}}$

A) $\frac{\sqrt{9}}{4}$

B) $\frac{\sqrt{9}}{\sqrt{4}}$

C) $\frac{9}{4}$

D) 2