[問題]考古題 Form19 sec8 DS-Q15

[凱薩琳]

Three different cards are face down. Each card has one letter, J,K,or L, on the reverse side. If two of these cards are to be turned over, which of the three letters,J,K,or L will not be revealed? （三張卡片分別為I, II, III）

(1) Card II will not be turned over.
(2)If cards I and II were turned over; the letter L would not
be revealed.

Ans:E
為啥不是B勒？