The principle of jus cogens is incorporated in which Article of the Vienna Convention on the Law of Treaties, 1969?

Correct option is C

Article 53 of the Vienna Convention on the Law of Treaties (1969) addresses treaties conflicting with a peremptory norm of general international law ( jus cogens). It states that a treaty is void if, at the time of its conclusion, it conflicts with such a norm. A jus cogens norm is recognized by the international community as a whole as a norm from which no derogation is permitted and which can be modified only by a subsequent norm of the same character.
Information Booster: While Article 53 deals with existing treaties conflicting with jus cogens norms, Article 64 of the same Convention provides that if a new jus cogens norm emerges, any existing treaty conflicting with that norm becomes void and terminates.