82. Which of the following species is/are a resonance form(s) of the species in the box?
(A) I and II
(B) I and III
(C) II and III
(D) I and IV
(E) II and IV
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統計: A(0), B(1), C(0), D(0), E(0) #3853597
統計: A(0), B(1), C(0), D(0), E(0) #3853597