Despite the fact that antilock brakes are designed to make

Despite the fact that antilock brakes are designed to make driving safer, research suggests that people who drive cars equipped with antilock brakes have more accidents than those who drive cars equipped with antilock brakes have more accidents than those who drive cars not equipped with antilock brakes.

Each of the following, if true, would help resolve the apparent discrepancy described above EXCEPT:

a) Most cars equipped with antilock brakes are, on average, driven more carelessly than cars not equipped with antilock-brakes. You would expect this to lead to more accidents with anti-lock brake equipped cars. It's a strange thing to have be true, but hey, the question tells to assume it is.

b) Antilock brakes malfunction more often than regular brakes. Leading to more accidents. Not a big leap of logic there.

c) Antilock brakes require expensive specialized maintenance to be even as effective as unmaintained regular brakes Which implies that not everyone will have the means to get the maintenance, which would lead to b) happening.

d) Most people who drive cars equipped with antilock brakes do not know how to use those brakes properly Pretty straightforward. You need to know how to use brakes in order to not have accidents.

e) Antilock brakes were designed for safety in congested urban driving, but accidents of the most serious nature take place on highways. This is talking about the nature of the accidents, not the frequency. The statement only said more accidents happen, not accidents are more/less serious with anti-lock brakes. This doesn't tell me why anti-lock brake cars are getting into MORE accidents at all. The others all clearly tell me why.