Factor the Trinomial, If Possible $50 m ^ { 2 } - 140 m n + 98 n ^ { 2 }$

Multiple Choice

Factor the trinomial, if possible.
- $50 m ^ { 2 } - 140 m n + 98 n ^ { 2 }$

A) $2 ( 5 m - 7 n ) ^ { 2 }$

B) $( 10 m - 14 n ) ^ { 2 }$

C) $( 10 m + 7 n ) ^ { 2 }$

D) $2 ( 5 m + 7 n ) ^ { 2 }$