Multiply Write Your Answer in a + Bi Form $$( 9 + 3 i ) ( 3 + 3 i )$$

Multiple Choice

Multiply. Write your answer in a + bi form.
- $$( 9 + 3 i ) ( 3 + 3 i )$$

A) $36 - 18 \mathrm { i }$
B) $9 i ^ { 2 } + 36 i + 27$
C) $18 + 36 i$
D) $18 - 36 \mathrm { i }$