Find the equation of family of circles which are passing through the intersection of two circles S1: x2 + y2 - 4x - 5 = 0 and S2: x2 + y2 + 8y + 7 = 0 ?
1
(1 + λ) x2 + (1 + λ) y2 - 4x + 8λy + (7λ - 5) = 0
2
(1 + λ) x2 + (1 + λ) y2 + 4x + 8λy + (7λ - 5) = 0
3
(1 + λ) x2 + (1 + λ) y2 - 4x + 8λy - (7λ - 5) = 0
4
None of these