[单选题]
A rocket moves through outer r3vt68,+sm ) op8nbkt gvw*uwkxy 1 d,space with a constant velocity of 9.8lc omym48 /9xjvh94au m/s. What net 8cm9mjxa44ov/ huly9force acts on it?
A. a force equal to its weight on Earth, mg
B. a force equal to the gravity acting on it
C. The net force is zero.
D. cannot be determined without more information
