A satellite S is in an elliptical orbit around a planet P, as shown, with r1 and r2 being its closest and farthest distances, respectively, from the center of the planet. If the satellite has a speed v1 at its closest distance, what is its speed at its farthest distance?
(A) (r1/r2)v1
(B) (r2/r1)v1
(C) (r2 - r2)v1
(D) ((r1 + r2)/2)v1
(E) ((r2 - r1)/(r1 + r2))v1
