Write the Expression in the Form a + Bi $\frac{8 \mathrm{i}}{4+9 \mathrm{i}}$

Multiple Choice

Write the expression in the form a + bi.
- $\frac{8 \mathrm{i}}{4+9 \mathrm{i}}$

A) $\frac{72}{65}-\frac{32}{65} \mathrm{i}$

B) $\frac{72}{97}+\frac{32}{97} \mathrm{i}$

C) $-\frac{72}{97}+\frac{32}{97} \mathrm{i}$

D) $-\frac{72}{65}-\frac{32}{65} \mathrm{i}$