How Are Arguments by Analogy Often Used in Ethics, According

How are arguments by analogy often used in ethics, according to Chapter 7?

A) To show that because an action resembles some other action that is clearly morally wrong, the first action is also morally wrong.
B) To show that because an action differs in important ways from some other action that is morally wrong, the first action is not morally wrong.
C) To show that you cannot compare two actions, morally speaking, because of specific significant differences between them.
D) To show that because an action resembles some other action that is illegal, the first action is morally wrong, even if it is not technically illegal.