14. What compound results from the 1,4-addition of one equivalent of HBr to 1,3-butadiene?
(A) 1-bromo-1-butene
(B) 1-bromo-2-butene
(C) 4-bromo-1-butene
(D) 3-bromo-1-butene
(E) 2-bromo-2-butene

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統計： A(0), B(0), C(0), D(1), E(0) #3829713