Which the Following Best Describes Harassment

Which the following best describes harassment?

A) Improper behaviour considered offensive by the victim, and the perpetrator knows that this is an offensive behaviour
B) Improper behaviour considered offensive by society in general, and the perpetrator knows that this is an offensive behaviour
C) Improper behaviour not considered offensive by the victim, and the perpetrator knows that this is an offensive behaviour
D) Improper behaviour considered offensive by the victim, and the perpetrator does not know that this is an offensive behaviour
E) Improper behaviour considered not offensive by the victim, and the perpetrator does not know that this is an offensive behaviour