Multiply the Complex Numbers Below and Leave the Result in Trigonometric

Multiple Choice

Multiply the complex numbers below and leave the result in trigonometric form. $\left[ 0.1 \left( \cos 260 ^ { \circ } + i \sin 260 ^ { \circ } \right) \right] \left[ 0.9 \left( \cos 220 ^ { \circ } + i \sin 220 ^ { \circ } \right) \right]$

A) $0.09 \left( \cos 120 ^ { \circ } + i \sin 120 ^ { \circ } \right)$
B) $0.09 \left( \cos 120 ^ { \circ } + i \sin 40 ^ { \circ } \right)$
C) $\cos 40 ^ { \circ } + i \sin 40 ^ { \circ }$
D) $0.09 \left( \cos 40 ^ { \circ } + i \sin 40 ^ { \circ } \right)$
E) $\cos 120 ^ { \circ } + i \sin 120 ^ { \circ }$