Child Safety Seats Make More Sense in Autos Than in Airplanes

Child safety seats make more sense in autos than in airplanes because

A) Crashes are more common in autos
B) Safety seats are less likely to save lives in an airplane crash
C) The cost of an extra airline seat may cause people to travel in more dangerous ways
D) All of the above
E) None of the above, child safety seats make sense in both.