Rune Rutledge Was Looking for a Mercenary to Kill His

Rune Rutledge was looking for a mercenary to kill his business partner. He found a listing on Craigslist that indicated the following: "Former IRAQ War solider. Protection services and other types of services available for those who need to send a message to others." Rune made contact with the soldier and the two entered into a contract for the solider to kill Rune's partner. Rune's partner was killed and his partner's family has sued Craigslist. Which of the following is an accurate summary of the legal issues in this situation?

A) Craigslist is liable for not properly screening the ads.
B) Craigslist is not liable because of First Amendment protections.
C) Craigslist is not liable unless it was aware of the ad and the soldier's intentions.
D) none of the above