For the reactions given below:
$(I)$ Cyclohexyl chloride $\rightarrow$ Cyclohexyl cation + $Cl^-$,$\Delta H_1^{\circ}$
$(II)$ Cyclohex$-2-$enyl chloride $\rightarrow$ Cyclohex$-2-$enyl cation + $Cl^-$,$\Delta H_2^{\circ}$
$(III)$ Benzyl chloride $\rightarrow$ Benzyl cation + $Cl^-$,$\Delta H_3^{\circ}$
$(IV)$ Chlorobenzene $\rightarrow$ Phenyl cation + $Cl^-$,$\Delta H_4^{\circ}$
The correct decreasing order of enthalpies of reaction for producing the carbocation is:

• A
  $\Delta H_1^{\circ} > \Delta H_2^{\circ} > \Delta H_3^{\circ} > \Delta H_4^{\circ}$
• B
  $\Delta H_4^{\circ} > \Delta H_1^{\circ} > \Delta H_2^{\circ} > \Delta H_3^{\circ}$
• C
  $\Delta H_3^{\circ} > \Delta H_2^{\circ} > \Delta H_1^{\circ} > \Delta H_4^{\circ}$
• D
  $\Delta H_2^{\circ} > \Delta H_1^{\circ} > \Delta H_4^{\circ} > \Delta H_3^{\circ}$