Which of the following cannot be the median of five positive integers a, b, c, d, and e ？（）

单项选择题In the rectangular quadrant system shown above, which quadrant, if any, contains no point (x,y) that satisfies the equation x2-2y=3 ？（）

A. none
B. Ⅰ
C. Ⅱ
D. Ⅲ
E. Ⅳ

单项选择题Two cyclists are racing up a mountain at different constant rates. Cyclist A is now 50 meters ahead of cyclist B. How many minutes from now will cyclist A be 150 meters ahead of cyclist B ？（） (1) 5 minutes ago, cyclist A was 200 meters behind cyclist B. (2) Cyclist A is moving 25% faster than cyclist B.

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.