[单选题]
If it takes 50 m to stop a v.sn6alk. 0z((ygpf ucar initially moving at 25 m/s, what distance5ya i j, b3k0i;xjr*uq is require ji0y3;qj*,i5k aubrx d to stop a car moving at 50 m/s under the same condition?
A. $50 \; m$
B. $100 \; m$
C. $200 \; m$
D. $400 \; m$
