Which of the Following Is the Difference Between Kantian Ethics

Which of the following is the difference between Kantian ethics and ethical relativism?

A) Kantian ethics is based on rules that require consistency and reversibility, while ethical relativism suggests decisions based on individual feelings.
B) Kantian ethics is based on rules that provide the greatest good to the society, while ethical relativism suggests rules based on an implied social contract.
C) Kantian ethics is based on rules from an outside source, while ethical relativism is based on rules that require consistency and reversibility.
D) Kantian ethics suggests rules based on an implied social contract, while ethical relativism is based on rules from an outside source.