[单选题]
Two Styrofoam balls, of radii R and 2R, zvd z4jgnvn)8g j o8.,are releasph +cvvzi7ccmd9r7p f* .e15z ed simultaneously from a tall tower. Which will reach the ground fi1.rz5d* fphc+9pzcmcvie77v rst?
A. Both will reach the ground simultaneously.
B. the larger one
C. the smaller one
D. The result will depend on the atmospheric pressure.