Identify the Correct Statement Regarding Immanuel Kant's Categorical Imperative

Identify the correct statement regarding Immanuel Kant's categorical imperative.

A) It believes that standards of conduct can be objectively discovered.
B) It states that one's goal is to identify the consequences of a particular act to determine whether it is right or wrong.
C) It is based on the idea that a decision that maximizes the ratio of good over evil for all those concerned is the ethical course.
D) It is the notion that every person should act on only those principles that he,as a rational person,would prescribe as universal laws to be applied to the whole of humankind.