Which of these points (x,y)(x, y)(x,y) satisfies the equation xy+x−y=3xy + x - y = 3xy+x−y=3?
(1,2)(1, 2)(1,2)
(2,1)(2, 1)(2,1)
(0,−3)(0, -3)(0,−3)
(4,1)(4, 1)(4,1)