3. If A's height or weight is greater than B's in at least one aspect, 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. Therefore, the maximum number of great young men among the 100 young men could be
(A) 1
(B) 2
(C) 50
(D) 100
(D)
3.【Analysis and Solution】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 $(k=1,2, \cdots, 100)$, obviously these 100 young men are all good-looking young men, hence the answer is (D).