The correct option is D Guwahati High Court
the Guwahati High Court was established on 1st March 1948 after the Government of India Act 1935 was passed. It was originally known as the High Court of Assam and Nagaland but renamed as Gauhati High Court in 1971. It has the largest jurisdiction in terms of States then its area covering the states of Assam, Arunachal Pradesh, Nagaland, and Mizoram.