Option a is the correct answer. Quwwat-ul Islam Mosque stands northeast of the Qutb Minar in Delhi and not in Ajmer. It was commissioned by Qutb-ud-din Aibak, founder of the Mamluk dynasty. It was built using the ruins of 27 Hindu and Jain temples. Important Tips In 1408 A.D., Ibrahim Shah Sharki built the Atala Masjid which came to be considered as the ideal for the construction of the other mosques of Jaunpur. In this mosque, beautiful galleries were built by surrounding it with artistic walls. Its height is more than 100 ft . Its construction was begun by Feorze Shah in 1393 A.D. Jahaz Mahal (Ship Palace) at Mandu was built by Sultan Ghiyasuddin Khilji as a harem and it extends over a length of 110 m and a width of 15 m . This is where 15,000 royal women resided. The harem was constructed in such a manner that it gave the women complete autonomy yet shielded them from the eyes of the common man. Jama Masjid of Gulbarga was built by Bahmani Sultan Mohmmad Shah after he defeated Kapya Nayak of Warangal in 1367.