10. Compared to Friedel-Crafts acylation, the disadvantage(s) of Friedel-Crafts alkylation is/are:
(A)rearrangement
(B) polyalkylations
(C) the same
(D)( A ) and ( B )

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統計： A(1), B(0), C(0), D(0), E(0) #2991251