In the third stage of the evolution of the mind, ______.
A.the reacting organism is still unable to exercise the control over the objects in the external world B.the nonintrinsic meanings is sometimes involved for the organism to use the instrument' C.the intrinsic properties of the instrument is not involved in the reaction of the organism D.the ability of the organism to use the instrument shows that something that can't be found in the previous two stages have been introduced