In the gaseous state, aluminium chloride is present as the dimer, $\text{Al}_2\text{Cl}_6$. Using this information, which of the following are structural features of the $\text{Al}_2\text{Cl}_6$ molecule?
- A1, 2 and 3
- B1 and 2 only
- C2 and 3 only
- D1 only