3. If at least one of A's height or weight is greater than B's, then A is said to be no less than B. Among 100 young men, if someone is no less than the other 99, he is called a great young man. Then, the maximum number of great young men among the 100 young men could be
(A) 1;
(B) 2;
(C) 50;
(D) 100.
Answer (i)
3. (D)

Take 100 young men as a special case, where their heights and weights are all different, and the tallest is also the lightest, the second tallest is also the second lightest, $\cdots$, the $k$-th tallest is also the $k$-th lightest $(k=1,2, \cdots, 100)$. Clearly, these 100 young men are all excellent young men, hence the choice is (D).