Perform the Indicated Operations and Write the Result in Standard $( \sqrt { - 9 } ) ( \sqrt { - 4 } )$

Multiple Choice

Perform the indicated operations and write the result in standard form.
- $( \sqrt { - 9 } ) ( \sqrt { - 4 } )$

A) $- 6$
B) $- 6 i$
C) $6 \mathrm { i } ^ { 2 }$
D) 6