Multiply Write the Result in the Form a + Bi $\sqrt { - 64 } \cdot \sqrt { - 25 }$

Multiple Choice

Multiply. Write the result in the form a + bi.
- $\sqrt { - 64 } \cdot \sqrt { - 25 }$

A) $40 \mathrm { i } ^ { 2 }$
B) -40
C) $- 40 \mathrm { i }$
D) 40