Simplify the Expression $\sqrt { - 64 } \cdot \sqrt { - 5 }$

Multiple Choice

Simplify the expression. $\sqrt { - 64 } \cdot \sqrt { - 5 }$

A) $8 \sqrt { - 5 }$
B) $- 8 \sqrt { 5 }$
C) $8 \sqrt { 5 }$
D) $- 40$