Let f be a function with the first derivative f' (x ) = 2x2-5 for x > 0. It is known that f(1) = 7 and f(5) = 1 1. What value of X in the open interval (1, 5) satisfies the conclusion of the Mean Value Theorem for f on the closed interval [1, 5]? O O V10 O NIU O V5 Of does not fulfill the conditions of M.V.T. and hence, the theorem is not applied