問題詳情

3. Which of the following structures, if flat, can be considered aromatic?


(A) 1 only.
(B) 3 and 5 only.
(C) 2 and 4 only.
(D) 1 and 3 only.
(E) None of the above.

參考答案

答案：99

統計：A:0,B:0,C:1,D:0,E:0

難度：計算中