25) As shown, a man attempts to use a pulley system to lift a heavy box of weight W. The man desperately hangs from the rope draped over the pulley, creating the tension force Y, but he can not move the box. If C denotes the support force on the box by the floor, which of the following best represents the relationship between these forces, while the person is trying unsuccessfully to lift the box? (A) Y+C > W C (B) Y+C- W=0 (C) Y+C