In the historian's argument, the two portions highlighted play which of the following roles? A. The first is a position that the historian considers; the second states the historian's conclusion concerning that position. B. The first is a position that the historian rejects; the second is a conclusion drawn to justify that rejection. C. The first presents a position that is upheld by the historian; the second presents the historian's conclusion concerning a different position. D. The first presents evidence in support of the historian's conclusion; the second presents that conclusion. E. The first is a position that the historian evaluates; the second provides evidence to support the historian's assessment of that position.