Which of the Following Best Explains Kant's Principle That You

Multiple Choice

Which of the following best explains Kant's principle that you should "act only according to that maxim whereby you can at the same time will that it should become a universal law"?

A) You should act only on maxims that conform with the universal laws of human nature.
B) You should always do your duty, regardless of the consequences.
C) You should never act in ways that violate laws that would be in place in any well-organized society.
D) You should only act on principles that you could make into a law for everyone without contradicting your own will.