Which of the following is a tip for the passage-based reading questions in the critical-reading section of the PSAT? A. When comparing an aspect of a pair of passages, don't be misled by choices that are correct for only one of the passages. B. When comparing an aspect of a pair of passages, generally the correct answer choice is true for only one of the passages. C. It's not necessary to follow the author's reasoning to understand the passage. D. Don't bother reading the introduction to the passage; it's not typically useful.