Which of the Following Statements Is an Example of Sexual

Which of the following statements is an example of sexual harassment?

A) A boss tells an employee that she'll get a promotion if she has sex with him.
B) A floor supervisor has several calendars of sexually suggestive photos posted in plain view of employees who enter his office for daily status meetings.
C) An employee repeatedly makes unwelcome sexually vulgar remarks to another employee about that person's appearance but never makes physical contact.
D) All of these statements are examples of sexual harassment.