The correct answer is: Both A and R are true and R is the correct explanation of A.
The Buland Darwaza is a triumphal arch in the city of Fatehpur Sikri in India. It was built by the Mughal emperor Akbar in 1602 to commemorate his victory over the Gujarat Sultanate. The arch is 54 meters (177 feet) high and 33 meters (108 feet) wide. It is made of red sandstone and decorated with intricate carvings and inscriptions. The Buland Darwaza is one of the most impressive buildings in Fatehpur Sikri and is a UNESCO World Heritage Site.
The reason for building the Buland Darwaza is given in the reason statement (R). Akbar wanted to commemorate his conquest of Gujarat. The assertion statement (A) states that the Buland Darwaza was built by Akbar in 1602. This is also true. Therefore, both A and R are true and R is the correct explanation of A.