Millionaire Mode

Which of the following are significances of Universal Law of Gravitation?
(a) It is applicable to every object in the universe.
(b) It is the cause of revolution of moon around the earth and revolution of planets around the sun.
(c) When an object is immersed fully or partially in a liquid, it experiences an upward force.
(d) It explains the cause of neap tide due to moon and sun.