A horse harnessed to a wagon refuses to pull, citing Newton's third law, which states that for every force there is an equal but opposite reaction force. The horse, incorrect in its reasoning, can pull the wagon because A.after it gives a jerk and the wagon is moving, its pulling force will be greater than the reaction to this force. B.the law applies only to static cases. C.the wagon cannot possibly pull back with a force equal in magnitude to the pulling force. D.the action and reaction forces are acting on different bodies. E.after friction is overcome, the reaction force is less than the pulling force.

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