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

$\mathrm{CH}_{3} \mathrm{COCl} / \mathrm{AlCl}_{3}, \mathrm{Br}_{2} / \mathrm{AlBr}_{3}, \mathrm{HNO}_{3} / \mathrm{H}_{2} \mathrm{SO}_{4}, \mathrm{Zn} / \mathrm{HCl}$

$\mathrm{CH}_{3} \mathrm{COCl} / \mathrm{AlCl}_{3}, \mathrm{Zn}-\mathrm{Hg} / \mathrm{HCl}, \mathrm{Br}_{2} / \mathrm{AlBr}_{3}, \mathrm{HNO}_{3} / \mathrm{H}_{2} \mathrm{SO}_{4}$

$\mathrm{Br}_{2} / \mathrm{AlBr}_{3}, \mathrm{CH}_{3} \mathrm{COCl} / \mathrm{AlCl}_{3}, \mathrm{HNO}_{3} / \mathrm{H}_{2} \mathrm{SO}_{4}, \mathrm{Zn} / \mathrm{HCl}$

$\mathrm{HNO}_{3} / \mathrm{H}_{2} \mathrm{SO}_{4}, \mathrm{Br}_{2} / \mathrm{AlCl}_{3}, \mathrm{CH}_{3} \mathrm{COCl} / \mathrm{AlCl}_{3}, \mathrm{Zn}-\mathrm{Hg} / \mathrm{HCl}$