Find the Product $\left[ 8 \operatorname { cis } 240 ^ { \circ } \right] \left[ 6 \operatorname { cis } 330 ^ { \circ } \right]$

Multiple Choice

Find the product. Write the product in rectangular form, using exact values.
- $\left[ 8 \operatorname { cis } 240 ^ { \circ } \right] \left[ 6 \operatorname { cis } 330 ^ { \circ } \right]$

A) $- 24 \sqrt { 3 } - 24 \mathrm { i }$
B) $- 12 + 12 \sqrt { 3 } i$
C) $24 \mathrm { i }$
D) 24