Factor Completely $25 x^{2} y^{2}-70 x y+49$ A) $(5 x y-7)^{2}$ B) $(5 x y-7)(5 x y+7)$

Multiple Choice

Factor completely.
- $25 x^{2} y^{2}-70 x y+49$

A) $(5 x y-7) ^{2}$
B) $(5 x y-7) (5 x y+7)$
C) $(5 x y+7) ^{2}$

D) Prime