As observed from the earth, the sun appears to move an approx. circular orbit. For the motion of another planet like mercury as observed from the earth, this would
A. the similary ture.
B. not be true because the force between earth and mercury is not inverse square law.
C. not be true because the major gravitational force on mercury is due to sun.
D. not be true because mercury is influenced by force other than gravitational forces.
