It is a crime to harm or threaten to harm someone who has reported a crime or someone who has plans to testify in court about a crime. This is called Retaliation.
Which situation below is the best example of Retaliation?
I. Ernie breaks Harold's nose with his fist. Ernie tells Harold he will break both of his legs if he reports him to the police.
II. Sally tells Larry a secret, and then says she is going to hit him if he tells the secret to Jeff.
III. Sue is called to be a witness in a robbery trial. The man she is to testify against bumps her shoulder in the crowded hallway in the courthouse and walks on, unaware of what he has done.
IV. A robbery suspect tells his cellmate he wishes he could keep a witness from testifying against him in court.

Question: 以下哪项是正确的？
Options:
A. 以上各项均不成立, B. III 或 II, C. 仅 III, D. 只有 I, E. II 或 III
Answer: D
True statement: I