Which of the following is NOT an integer solution to x2−y2=0x^2 - y^2 = 0x2−y2=0?
(5,5)(5, 5)(5,5)
(3,−3)(3, -3)(3,−3)
(0,0)(0, 0)(0,0)
(2,1)(2, 1)(2,1)