Simplify Write Your Answers in the Form of A+bi, Where $$( 3 + 3 i ) ( 3 - 3 i )$$

Multiple Choice

Simplify. Write your answers in the form of a+bi, where a and b are real numbers.
- $$( 3 + 3 i ) ( 3 - 3 i )$$

A) $9 - 9 \mathrm { i }$
B) $9 + 9 \mathrm { i }$
C) 0
D) 18