Identify the critical point of f(x,y)=x2+y2−4x+6yf(x, y) = x^2 + y^2 - 4x + 6yf(x,y)=x2+y2−4x+6y.
(2,−3)(2, -3)(2,−3)
(−2,3)(-2, 3)(−2,3)
(4,−6)(4, -6)(4,−6)
(0,0)(0, 0)(0,0)