[单选题]
If it takes 50 m to stop a car s0l)0x-qu2- zild mmxinitiallyyw, abctk1n139dq d b* moving at 25 m/s, what distance is required to stop a car moving at 50 m/s under thenkacyb113 9,dw tb *qd same condition?
A. $50 \; m$
B. $100 \; m$
C. $200 \; m$
D. $400 \; m$
