[单选题]
If it takes 50 m to stop a csk9 lmah+ w5q(u5fzaw f+5fx5e4p8m sar ,-*yiv3 ibvdminitially moving at 25 m/s, what distance is required to stop a car moving at 50 m/s under thbvi ,y3midv-* e same condition?
A. $50 \; m$
B. $100 \; m$
C. $200 \; m$
D. $400 \; m$
