- A
- B
- C
- D
- E
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Answer: D official key
Approach: Linear arrangement — build the row from the 'left of / right of' clues.
Solution:
D is left of C and A is right of C → D … C … A.
B is left of D → B … D … C … A.
B is right of E → E … B … D … C … A.
Five people, five seats: E B D C A, with E at a corner as given.
Middle (3rd) seat = D.
Why the other options are wrong:
A, E: A and E are at the two ends.
B, C: B and C are 2nd and 4th.
Cetking shortcut: E at one end and the chain E-B-D-C-A uses all five — the 3rd letter is the answer.
Answer: D