HURRY Which model would best demonstrate the role of gravity in the Solar System?

A. a large ball with 8 smaller balls arranged around it because gravity is between the Sun and 8 planets

B. a magnet drawn close to another magnet because planets are drawn towards the magnetism of the Sun

C. a football field with a pea at one end and a grain of sand at the other because the scale of gravity is large

D. a ball attached to a string moving in a circular motion because the string keeps the ball in place like gravity