Physics · Gravitation

Read the following lines carefully: 'A scientist observes that all planets in our solar system revolve around the Sun in elliptical orbits. He notes that the gravitational force exerted by the Sun keeps the planets in orbit, and the planets' velocity varies depending on their distance from the Sun.' Which of the following statements can be correctly inferred from the given scenario? (A) The Sun's gravity is responsible for planetary motion. (B) Planets closer to the Sun move slower than those farther away. (C) The motion of planets follows a perfectly circular path. (D) Planetary motion is governed by gravitational forces and velocity.