Which of the Following Is a Characteristic of Rule Utilitarians

Which of the following is a characteristic of rule utilitarians?

A) They take the position that whatever applicable rule has been established by political representatives must be followed and should serve as a standard in the evaluation of similar acts.
B) They focus on the question of verifying whether an act is ethically good or bad.
C) They determine if an action is right or wrong on the basis of whether that individual act alone brings net happiness to society, as opposed to whether other alternatives would bring more or less net happiness.
D) They evaluate actions as ethically good or bad depending on whether they contribute to improving inherent human capacities.