I pts Question S Let f be a function defined on the closed interval [a, b]. Which of the following statements is necessarily true? If f is continuous, then it has a global minimum on [a, b]. If f is constant, then it does not have a global maximum on [a, b]. If f is continuous, then it has a critical point in [a, b]. O If f is not continuous, then it does not have a global maximum on [a, b]