Abby, Bobby, Clyde, David, and Evangeline are causing trouble by confusing people with weird statements, and you have to break all their shenanigans. You make an ultimatum: if you solve a riddle of their creation, they have to stop causing trouble. The five agree to your conditions and start making statements:
Abby: I am telling the truth
Bobby: Clyde or Abby is lying but not both.
Clyde: I am telling the truth.
David: Bobby is telling the truth.
Evangeline: Clyde is telling the truth.
Given that there is only one answer, all people in the answer choices have made a statement, and statements must be true or false but not both, which person is telling the truth?