49. Which series of reagents would be required to perform the following synthesis?
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(A) 1. ClCH2CH2CH3, AlCl3   2. FeBr3, Br2
(B) 1. ClCOCH2CH3, AlCl3   2. FeBr3, Br2
(C) 1. ClCOCH2CH3, AlCl3   2. FeBr3, Br2 3. Zn(Hg), HCl
(D) 1. ClCOCH2CH3, AlCl3   2. Zn(Hg), HCl 3. FeBr3, Br2

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