The Correct Answer is Kolkata High Court.

• The oldest High Court in India is the Kolkata High Court.
• It has control over the Andaman and Nicobar Islands of the State of West Bengal and the Union Territories.
• The architecture of the High Court building is based on the Ypres Cloth Hall in Belgium.
• The court has a judge-sanctioned strength of 72.
• The High Court of Kolkata is one of the three High Courts in India established by Letters of Patent issued by Her Majesty Queen Victoria at the Presidency Towns, dated 26 June 1862, and is India's oldest High Court.
• Under the High Courts Act, 1861, which was followed by the Supreme Court of Judicature at Fort William, it was established as the High Court of Judicature at Fort William on July 1, 1862.
• Despite having officially changed the name of the town from Calcutta to Kolkata in 2001, the Court maintained the old name as an institution.
• On July 5, 2016, the Cabinet approved the bill to rename it as Kolkata High Court along with the renaming of its two other counterparts in Chennai and Mumbai, but the old name is still retained by the High Court.

Madras High Court:-

• After the Kolkata High Court in Kolkata, the Madras High Court is India's second oldest High Court.
• It is situated in Chennai, Tamil Nadu. 
• The court is one of the three High Courts in India, created by letters of a patent issued by Queen Victoria, dated 26 June 1862, in the three presidential towns of Madras, Bombay, and Calcutta.
• It exercises original jurisdiction over the city of Chennai and appeals jurisdiction over the entire state of Tamil Nadu and the territory of the Union of Puducherry, as well as extraordinary original civil and criminal jurisdiction under the letters of patent and special original jurisdiction under the Constitution of India for the issue of lawsuits.

• It is made up of 74 judges and a chief justice who is responsible for the general policy of judicial administration.

Karnataka High Court:-

• It is officially known as Karnataka Uccha Nyayalaya.
• It is situated in Bangalore, Karnataka's capital city.
• Previously, it was the Mysore High Court.
• A red brick structure known as Attara Kacheri serves as the High Court.
• It is in front of the Soudha of Vidhana, which is the seat of the Karnataka legislature.