Which of the Following Best Describes the Original Position

Which of the following best describes the original position?

A) It is a principle based on the basic theory of logic: The conclusion of any argument is usually based on the first premise.
B) It is a principle primarily found within Catholic ethics: An action that is otherwise prohibited can be permitted, provided that the effect of the primary action is proportionately very serious.
C) It is a principle based on John Stuart Mill's idea: One should not interfere with other people's lives unless those people are doing harm to others.
D) It is a principle for fair distribution: Make rules as if you do not know who you will be when they take effect.