51. Which of the following is produced by the reaction of (CH3CH2)2S with CH3CH2I? (A) CH3CH2CH2CH2I (B) (CH3CH2)3S+ I- (C) (CH3CH2)3S (D) CH3SCH2CH2CH3

49. Which series of reagents would be required to perform the following synthesis? (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