[单选题]
A rocket moves through outer space witu vh;t smfpj+fe-/qyg) -n,( ehvmr;fhnye 2 +st*nc8 2 a constant velocity of 9.8 m/s. What net force acts on ithsnev2;mn+f 8* ry2ct?
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
