A witness is called before Congress to give testimony about illegal fundraising by a politician. The witness testifies that the politician is "corrupt" and a "liar." The witness sincerely believed what he was saying was accurate, but in reality the politician was completely honest in her actions. If the politician sues the witness for the intentional tort of defamation, what defense should the witness raise?

Group of answer choices:

a.Truth

b.Absence of publication

c.Privilege

d.Consent