[单选题]
If it takes 50 m to s6:.k:.qwloo q fzf6dm+ 6i2 jgr.xta stop a car initivpy e* -+nnzr9ally moving at 25 m/s, what distance is required to stop a car moving at 50 m/s under the saz+e -v*yn9 prnme condition?
A. $50 \; m$
B. $100 \; m$
C. $200 \; m$
D. $400 \; m$
