Factor the Trinomial, If Possible $$( m - 5 n ) ^ { 2 } - 12 ( m - 5 n ) + 36$$

Multiple Choice

Factor the trinomial, if possible.
- $$( m - 5 n ) ^ { 2 } - 12 ( m - 5 n ) + 36$$

A) $( m - 5 n ) ^ { 2 }$
B) $( m - 5 n + 6 ) ( m + 5 n - 6 )$
C) $( m + 5 n + 6 ) ^ { 2 }$
D) $( m - 5 n - 6 ) ^ { 2 }$