GRE Logical Reading: ETS-GRE逻辑单题ETS - 1S4S91W1F58048U_J$

What purpose do the two boldface sentences serve in the passage? A. The first is the conclusion drawn by the speaker; the second is the alternative to that conclusion. B. The first is a short-term solution to a problem; the second is a long-term solution to the same problem. C. The first presents a problem; the second poses an ideal solution to the problem. D. The first presents a popular solution to a problem; the second presents a solution preferred by the author. E. The first presents an argument; the second presents evidence to support the argument.