Option c is the correct answer. The archaeological remains of the Mauryan capital of Pataliputra are located in the modern-day city of Patna, Bihar. The remains are spread over two sites, Kumrahar and Bulandibagh. Kumrahar is the site of the ancient city's administrative center, while Bulandibagh is the site of its residential quarters. The remains at Kumrahar include a number of palaces, temples, and administrative buildings. The remains at Bulandibagh include a number of houses, shops, and streets.