If f(x)=x2−4x+3f(x) = x^2 - 4x + 3f(x)=x2−4x+3, find the vertex of the parabola.
(2,−1)(2, -1)(2,−1)
(4,3)(4, 3)(4,3)
(−2,1)(-2, 1)(−2,1)
(1,0)(1, 0)(1,0)