The equation of the circle which cuts orthogonally each of the three circles given below:
x²+y²−2x+3y−7=0, x²+y²+5x−5y+9=0 and x²+y²+7x−9y+29=0
A x²+y²−16x−8y−12=0
B x²+y²−16x−18y−4=0
C x²+y²+16x−18y+4=0
D x²+y²+16x+18y+12=0