Find the Product A) $5 \sqrt { 6 } - \sqrt { 2 } i$

Multiple Choice

Find the product. Write the product in rectangular form, using exact values.
- $\left[ 7 \left( \cos 120 ^ { \circ } + \mathrm { i } \sin 120 ^ { \circ } \right) \right] \left[ 2 \left( \cos 90 ^ { \circ } + \mathrm { i } \sin 90 ^ { \circ } \right) \right]$

A) $5 \sqrt { 6 } - \sqrt { 2 } i$
B) $7 \sqrt { 3 } - 28 \mathrm { i }$
C) $14 - 14 \sqrt { 3 } i$
D) $- 7 \sqrt { 3 } - 7 i$