Who has the constitutional authority to establish a High Court for any Union Territory or extend its jurisdiction?

Which of the following High Courts has its jurisdiction over more than one state or Union Territory?

Which High Court has territorial jurisdiction over the Union Territory of Andaman and Nicobar Islands?

Which one of the following High Courts has the Territorial Jurisdiction over Andaman and Nicobar Islands?

Under which Article of the Indian Constitution there is provision for the High Courts for Union Territories?

Article 231 of the Constitution of India grants power to establish a common High Court for two or more states to