Correct Option: D

Guwahati High Court has the largest number of Benches.
The principal seat of the Gauhati High Court is at Guwahati in Assam. The court has 3 outlying benches. These are:
The Kohima bench for Nagaland state.
The Aizawl bench for Mizoram state.
The Itanagar bench for Arunachal Pradesh state.
Former benches, now full fledged high courts:
The Imphal bench(established on 21 January 1972)
(Converted to a High Court in March 2013)
The Agartala bench established on 24 January 1972)
(Converted to a High Court in March 2013)
The Shillong bench established on 4 September 1947)(Converted to a High Court in March 2013)