Perform the Indicated Operations and Write the Result in Standard $\sqrt { - 49 } + \sqrt { - 81 }$

Multiple Choice

Perform the indicated operations and write the result in standard form.
- $\sqrt { - 49 } + \sqrt { - 81 }$

A) $- 16$
B) $16 \mathrm { i }$
C) $- 16 \mathrm { i }$
D) $63 \mathrm { i }$