Find the Sum or Difference $$( m + 3 ) ( m - 3 )$$

Multiple Choice

Find the sum or difference.
- $$( m + 3 ) ( m - 3 )$$

A) $m ^ { 2 } - 6 m + 9$
B) $m ^ { 2 } - 9$
C) $m ^ { 2 } - 6$
D) $m ^ { 2 } - 6 m - 9$