Write in Terms of I $\sqrt { - 1600 }$ A) $40 \mathrm { i }$

Multiple Choice

Write in terms of i.
- $\sqrt { - 1600 }$

A) $40 \mathrm { i }$
B) $- 40 \mathrm { i }$
C) $\mathrm { i } \sqrt { 40 }$
D) $\pm 40$