The correct sequence of reagents used in the preparation of $4-$bromo$-2-$nitroethylbenzene from benzene is:

  • A
    $HNO_3 / H_2SO_4, Br_2 / AlCl_3, CH_3COCl / AlCl_3, Zn-Hg / HCl$
  • B
    $Br_2 / AlBr_3, CH_3COCl / AlCl_3, HNO_3 / H_2SO_4, Zn / HCl$
  • C
    $CH_3COCl / AlCl_3, Br_2 / AlBr_3, HNO_3 / H_2SO_4, Zn / HCl$
  • D
    $CH_3COCl / AlCl_3, Zn-Hg / HCl, Br_2 / AlBr_3, HNO_3 / H_2SO_4$

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