Factor by Any Method $$9 \mathrm { k } ^ { 2 } - 64 \mathrm {~m} ^ { 2 }$$

Multiple Choice

Factor by any method.
- $$9 \mathrm { k } ^ { 2 } - 64 \mathrm {~m} ^ { 2 }$$

A) $( 3 \mathrm { k } + 8 \mathrm {~m} ) ^ { 2 }$
B) $( 3 k + 8 m ) ( 3 k - 8 m )$
C) $( 3 k - 8 m ) ^ { 2 }$
D) $( 9 k + m ) ( k - 64 m )$