It can be related but as we say in social science, correlation is not causation.
As such, D is correct as some believe that using suicide bombing is their way of fulfilling a sacred duty. Suicide bombing is merely the vehicle by which they are fulfilling, however misguided, their religious duty.
Answer:
The drawbacks would be that many would be excused from harsh punishment as they will be fined in proportion to their case; and by Earls and Barons being fined only by their class, it allows those classes to get away with their actions whenever they do something to a lower class. The benefits would be the same as the drawbacks, less punishment and the ability to get away with crimes.
Islam prohibits the use of alcohol because they see that if you drink too much it will poison you and make you do idiotic things, and you can't have even a glass because it is addictive and you will drink too much