[单选题]
10.42: A comet moves in an elliptical*m o41wn7djhyi 9i u/a orbitrmjb);+yc 8 cja 6el.d around the sun. As the comet moves from aphelion (the point on the a ly8bc+ r6ec ;dj)jm.orbit farthest from the sun) to perihelion (the point on the orbit closest to the sun), which of the following results is true?
