(CNN) The Washington Post's Fact Checkers awarded Hillary Clinton four "Pinocchios" -- their worst rating -- after the former Secretary of State defended her use of a private email server in an interview Sunday by claiming the FBI director said she had been "truthful" about the subject.

In the interview on Fox News Sunday, Clinton had defended her use of a private email server, saying "[FBI Director James Comey] said my answers were truthful, and what I've said is consistent with what I have told the American people, that there were decisions discussed and made to classify retroactively certain of the emails."

But the Fact Checkers at the Washington Post weren't buying it.

"Clinton is cherry-picking statements by Comey to preserve her narrative about the unusual setup of a private email server. This allows her to skate past the more disturbing findings of the FBI investigation," they wrote.

Parsing Clinton's public statements and comparing them to Comey's congressional testimony, the Post's Fact Checkers determined that while Clinton's answers to the FBI during its investigation may have been truthful, that description couldn't reasonably be extended to everything she's said in public -- parts of which apparently contradict Comey's description of the server.

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