Ropes tied between trees are supposed to stop a runaway railway car. The ropes must stop the car in the same distance, but the cars have different initial velocities and masses. Rank these situations with regard to the amount of force the ropes must exert, from greatest to least:
A. CFEDBA    B. (CE)(BD)(AF)    C. (CF)D(BE)A
D. CFDEBA    E. All Same