66. What is the major product from this reaction?
(A)CH2=C=CHCH3
(B)CH2=CHCH2CH3
(C)
(D)
(E)
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統計: A(0), B(0), C(0), D(0), E(1) #2347842
統計: A(0), B(0), C(0), D(0), E(1) #2347842