Add or Subtract and Simplify $(3-3 \mathrm{i})+(8+9 \mathrm{i})$ A) $-5+12 i$ B) $-11-6 i$

Multiple Choice

Add or subtract and simplify.
- $(3-3 \mathrm{i}) +(8+9 \mathrm{i})$

A) $-5+12 i$
B) $-11-6 i$
C) $11+6 \mathrm{i}$
D) $11-6 \mathrm{i}$