The Figure Below Shows a Planet Traveling in a Counterclockwise

The figure below shows a planet traveling in a counterclockwise direction on an elliptical path around a star located at one focus of the ellipse.When the planet is at point A,

A) its speed is decreasing.
B) its angular momentum is increasing.
C) the gravitational force does no work on the planet.
D) all of the above are correct.
E) none of the above is correct.