[单选题]
A child falls sideways off a sled whvz wctcx)/3a b h0w0p;ile sledding on frictionless ice.43m fy 1mbwzv, What happef v3by,m1 zm4wns to the velocity of the sled?
A. It increases.
B. It remains the same.
C. It decreases.
D. cannot be determined from the information given
