90. What is the product of the transformation listed below?
(A) 1-Bromo-2-cyclohexylethane
(B) 1-Bromoethylcyclohexane
(C) 1-Bromo-3-ethylcyclohexane
(D) 1-Bromo-2-ethylcyclohexane
(E) 1-Bromo-1-ethylcyclohexane
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統計: A(1), B(7), C(1), D(4), E(12) #3101841
統計: A(1), B(7), C(1), D(4), E(12) #3101841