Factor by Grouping $$4 x ^ { 2 } - 20 x - 28 x + 140$$

Multiple Choice

Factor by grouping.
- $$4 x ^ { 2 } - 20 x - 28 x + 140$$

A) $( x - 5 ) ( 4 x - 28 )$
B) $4 ( x + 5 ) ( x + 7 )$
C) $4 ( x - 5 ) ( x - 7 )$
D) $( x - 5 ) ( x - 7 )$