Which of the Following Is NOT Representative of an INTEREST-BASED

Which of the following is NOT representative of an INTEREST-BASED approach to negotiation?

A) The parties engage in a civil discussion about how to resolve their concerns in a collaborative manner.
B) The parties have their lawyers negotiate a solution on their behalf, focusing on developing a solution that would satisfy both parties' interests.
C) One party threatens to shoot the other party and the second party calls his bluff.
D) The parties brainstorm possible options and then consider objective criteria to determine which option is best.
E) The parties agree to separate the person from the problem by setting ground rules around respectful communication.