Consider the following data.
(i) 2Al(s) + 6HCl(aq) → Al$$_2$$Cl$$_6$$(aq) + 3H$$_2$$(g) + 1200 kJ/mol
(ii) H$$_2$$(g) + Cl$$_2$$(g) → 2HCl(g) + 164 kJ/mol.
(iii) HCl(g) + aq → HCl(aq) + 83 kJ/mol.
(iv) Al$$_2$$Cl$$_6$$(s) + aq → Al$$_2$$Cl$$_6$$(aq) + 663 kJ/mol
The enthalpy of formation of anhydrous solid Al$$_2$$Cl$$_6$$ is :

A

$$-648$$ kJ mol$$^{-1}$$

B

$$-1350$$ kJ mol$$^{-1}$$

C

$$-2002$$ kJ mol$$^{-1}$$

D

$$-1527$$ kJ mol$$^{-1}$$