The figure above shows a boy swinging on a rope, starting at apoint higher than "a". consider the following distinct forces: 1. a downward force of gravity.2. a force exerted by the rope pointing from "a" to "o".3. a force in the direction of the boys motion.4. a force pointing from "o" to "a".which of the above forces are acting on the boy when he is inposition "a"? a)1 onlyb)1 and 2c)1 and 3