In the argument, the two portions in boldface play which of the following roles? A. This first is a piece of evidence supporting the main conclusion; the second is the main conclusion. B. The first is a view that the author opposes; the second is the main conclusion. C. The first is a prediction; the second gives evidence for this prediction. D. The first is a general rule, the violation of which seems to indicate a paradox; the second is the resolution of that apparent paradox. E. The first is an ironic description of what could happen in the marketplace; the second is a more realistic description of what actually happens.