Sally is a broker whose very good friend Jane is a broker with a competing company. They are having coffee and comparing the amount of commission they should each require from their clients. Which of the antitrust laws might a person from an adjoining table suspect they have violated if the conversation is overheard?

A) They could assume that the two are planning a group boycott

B) It sounds like the two ladies are discussing a tie-in agreement

C) Sally and her friend appear to be discussing illegal price fixing

D) Sally and Jane are simply having coffee and have not violated any antitrust laws.