Find the Product $\left[ 4 \operatorname { cis } 45 ^ { \circ } \right] \left[ 6 \operatorname { cis } 225 ^ { \circ } \right]$

Multiple Choice

Find the product. Write the product in rectangular form, using exact values.
- $\left[ 4 \operatorname { cis } 45 ^ { \circ } \right] \left[ 6 \operatorname { cis } 225 ^ { \circ } \right]$

A) $24 \mathrm { i }$
B) $- 24$
C) $- 24 \mathrm { i }$
D) 24