The correct answer is: A. Ballabhgarh
Sarrafabad was the old name of Ballabhgarh, a princely state in the erstwhile Gurgaon district of British India. It was founded in the 17th century by Raja Ballabh Singh, a descendant of the Tomar Rajputs. The state was ruled by the Ballabhgarh dynasty until it was merged into the Indian Union in 1948.
Ballabhgarh is located about 30 kilometers from Delhi. It is a major industrial town and is known for its textiles, leather, and engineering industries. The town is also home to a number of historical monuments, including the Ballabhgarh Fort, the Lal Darwaza, and the Jama Masjid.
The other options are incorrect because:
- Bahadurgarh is a town in the Jhajjar district of Haryana, India. It is located about 50 kilometers from Delhi.
- Mewat is a region in the northern part of Haryana, India. It is bounded by the states of Rajasthan and Uttar Pradesh to the north, the state of Uttarakhand to the east, the state of Delhi to the south, and the state of Punjab to the west.
- Hansi is a town in the Hisar district of Haryana, India. It is located about 150 kilometers from Delhi.