Which of the Following Acts Is an Example of Malicious

Which of the following acts is an example of malicious prosecution?

A) A patient files a suit against his doctor for malpractice.
B) A storekeeper detains a customer under the suspicion of shoplifting.
C) A newspaper publishes incriminating information about a public official.
D) An employer fires his employee for pulling a prank on him.
E) A student gets her classmate arrested by falsely accusing her of drug peddling.