[" 9.A circle passing through the point "(2,2(sqrt(2)-1))],[" touches the pair of lines "x^(2)-y^(2)-4x+4=0." The "],[" centre of the circle is "],[" (a) "(2,2sqrt(2))" and "(2,6sqrt(2)-8)],[" (b) "(2,5sqrt(2))" and "(2.7sqrt(2))],[" (c) "(2,5sqrt(2)-1)" and "(2,-3)],[" (d) none of these "]