求解prep一道

yummysteve

36.    4841-!-item-!-187;#058&004235

In a certain deck of cards, each card has a positive integer written on it.  In a multiplication game, a child draws a card and multiplies the integer on the card by the next larger integer.  If each possible product is between 15 and 200, then the least and greatest integers on the cards could be

 

(A) 3 and 15

(B) 3 and 20

(C) 4 and 13

(D) 4 and 14

(E) 5 and 14

為何D不行 請指點迷津

bestmarilyn

14*15=210>200

yummysteve

但是13*14還是可以 我有漏掉哪邊嗎?煩請賜教