[单选题]
A child falls sideways off a sled while sledding on frictionle(l wv qk;o+p/tss .qz9vv6jzs:-szr*i pw0v7b n8o 5 zvhice. What happens to thez*580-.rvwiv9zszvb :q 7 hznov p6s j velocity of the sled?
A. It increases.
B. It remains the same.
C. It decreases.
D. cannot be determined from the information given
