Option b is the correct answer. Borobudur Stupa is situated in the Kedu Valley, in the southern part of Central Java, at the centre of the island of Java, Indonesia. It is the world's largest Buddhist temple and a UNESCO World Heritage Site. It was built in the 8th and 9th centuries AD during the reign of the Syailendra Dynasty. It consists of nine stacked platforms, six square and three circulars, topped by a central dome. It is decorated with 2,672 relief panels and originally 504 Buddha statues. The central dome is surrounded by 72 Buddha statues, each seated inside a perforated stupa.