Which of the following is the graph of f(x) = x^2 − 5x + 4?
graph of a quadratic function with a minimum at 2, negative 9 and x intercepts at negative 1 and 5
graph of a quadratic function with a minimum at 3, negative 4 and x intercepts at 1 and 5
graph of a quadratic function with a minimum at 2.5, negative 2.4 and x intercepts at 1 and 4
graph of a quadratic function with a minimum at negative 1.5, negative 6.2 and x intercepts at 1 and negative 4