Write the Number as a Product of a Real Number $i$

Multiple Choice

Write the number as a product of a real number and $i$ . Simplify the radical expression.
- $\sqrt{-272}$

A) $4 \mathrm{i} \sqrt{17}$
B) $-4 \sqrt{17}$
C) $-4 \mathrm{i} \sqrt{17}$
D) $4 \sqrt{17}$