Find the Sum or Difference $$( 4 a - 7 ) ^ { 2 }$$

Multiple Choice

Find the sum or difference.
- $$( 4 a - 7 ) ^ { 2 }$$

A) $4 a ^ { 2 } + 49$
B) $16 a ^ { 2 } - 56 a + 49$
C) $16 a ^ { 2 } + 49$
D) $4 a ^ { 2 } - 56 a + 49$