On Friday’s broadcast of MSNBC’s “Hardball,” NBC News White House Correspondent Kristen Welker reported that a former federal official she spoke to told her that it’s “really hard to believe” Democratic presidential nominee former Secretary of State Hillary Clinton’s claim that she didn’t know that the ‘c’ on some of her emails stood for “confidential.”

Welker said Clinton “told FBI investigators that she didn’t know what the letter ‘c’ meant on some of the emails. Well, it stands for confidential, and she said she wasn’t clear about that. I spoke with a former federal official who said that is really hard to believe, given that she was secretary of state, given all that — the briefings that she had.”

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