The Relationship $r_{c}\left|\overrightarrow{v_{c}}\right|=r_{f}\left|\overrightarrow{v_{f}}\right|$ For an Elliptical Orbit Follows from the Fact That the Fact

Multiple Choice

The relationship $r_{c}\left|\overrightarrow{v_{c}}\right|=r_{f}\left|\overrightarrow{v_{f}}\right|$ for an elliptical orbit follows from the fact that the satellite's velocity is perpendicular to its position vector at the two extreme points and also from

A) Conservation of angular momentum.
B) Conservation of energy.
C) Conservation of momentum.
D) Newton's second law.
E) Some other properties of ellipses.
F) (The given relationship is false!)