Determine whether the Mean Value theorem can be applied to f on the closed interval [a, b]. (Select all that apply.) f(x) = 7x3, [1, 2] Yes, the Mean Value Theorem can be applied. No, because f is not continuous on the closed interval [a, b]. No, because f is not differentiable in the open interval (a, b). O None of the above. If the Mean Value Theorem can be applied, find all values of c in the open interval (a, b) such that f'(c) = _. (Enter your answers as a comma-separated list. If the Mean Value Theorem cannot be applied, enter NA.) b - a