Simplify to the Form $a+b i$
- $\frac{\sqrt{-49}+7 \mathrm{i}^{9}}{7}$ A) $2 \mathrm{i}$

Multiple Choice

Simplify to the form $a+b i$ .
- $\frac{\sqrt{-49}+7 \mathrm{i}^{9}}{7}$

A) $2 \mathrm{i}$
B) i
C) $-\mathrm{i}$
D) $-2 \mathrm{i}$