${\mathrm{Cl}}_2$ reacts with ${\mathrm{CS}}_2$ in presence of ${\mathrm{I}}_2$ catalyst to form

• A

  ${\mathrm{CHCl}}_3$

• B

  ${\mathrm{CCl}}_4$

• C

  ${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{Cl}$

• D

  ${\mathrm{C}}_2{\mathrm{H}}_6$