[单选题]
If it takes 50 m to stop a carv x+8k6igs)mstjd8x -n2 xlp9 initially movinvo1q b69pf) xog at 25 m/s, what distance is required to stop a car moving at 50 mp )9bo xf16oqv/s under the same condition?
A. $50 \; m$
B. $100 \; m$
C. $200 \; m$
D. $400 \; m$
