Which of the following points (x,y)(x, y)(x,y) satisfies x2+y2=2x^2 + y^2 = 2x2+y2=2?
(1,1)(1, 1)(1,1)
(−1,−1)(-1, -1)(−1,−1)
(1,−1)(1, -1)(1,−1)
(0,2)(0, 2)(0,2)