The International Law Commission

Which one of the following statements is the best answer? The International Law Commission, in its commentary on the articles of the Vienna Convention on Diplomatic Relations, considered the following theories as a possible foundation for the Convention:

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The “exterritorialy” theory, according to which the premises of the mission represent a sort of extension of the territory of the sending State

The “representative character” theory, which bases such privileges and immunities on the idea that the diplomatic mission personifies the sending State

The “functional necessity” theory, which justifies privileges and immunities as being necessary to enable the mission to perform its functions

A, B, and C are correct.