"Degree of Guilt" Puzzle

Caroline was the judge in the case of a man accused of breaking into someone's house.
"I was not the one who broke into the house." the man accused claimed.
"Are you telling the truth?" Caroline asked him.
"He'll say yes." the prosecuting attorney put in, "But he'll be lying."

Of the man accused of the crime and the prosecutor, only one was telling the truth. Who told the truth?

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Degree of Guilt Puzzle Answer