How Did the Court in Warshak V

How did the court in Warshak v. United States handle the issue of whether a person, whose business was under criminal investigation, had a reasonable expectation of privacy in the contents of his personal e-mail account?

A) The court held that Warshak assumed the risk that the recipient of his e-mails would reveal the contents of e-mails.
B) The court found that screening e-mails for viruses or pornography does not invade an individual's content-based privacy in the e-mails and has little bearing on his expectation of privacy in the content.
C) The court found that protecting shared communications through e-mails is as important to the Fourth Amendment principles today as protecting telephone conversations has been in the past.
D) All of the above reflect the court's opinion in Warshak.