Factor by Any Method $$( r + s ) ^ { 2 } - 9$$

Multiple Choice

Factor by any method.
- $$( r + s ) ^ { 2 } - 9$$

A) $\left( r ^ { 2 } + 3 \right) \left( s ^ { 2 } - 3 \right)$
B) $( r + s + 3 ) ( r + s - 3 )$
C) $( \mathrm { r } + \mathrm { s } + 3 ) ( \mathrm { r } - \mathrm { s } - 3 )$
D) $( r - s + 3 ) ( r - s - 3 )$