Write the Complex Number in Rectangular Form $10 \operatorname { cis } 135 ^ { \circ }$

Multiple Choice

Write the complex number in rectangular form.
- $10 \operatorname { cis } 135 ^ { \circ }$

A) $10 \sqrt { 2 } - 5 \mathrm { i } \sqrt { 2 }$

B) $5 \sqrt { 2 } - 5 \mathrm { i } \sqrt { 2 }$

C) $10 \sqrt { 3 } + 5 i \sqrt { 3 }$

D) $- 5 \sqrt { 2 } + 5 i \sqrt { 2 }$