Option c is the correct answer. The historical Digambar Jain temple of Sonagiri is located in Datia district of Madhya Pradesh. Sonagiri means the golden peak and is a sacred place for the Digambar sect of Jainism. It has about 77 temples on a hill and 26 temples in the village at the foot of the hill. The main temple is dedicated to Chandraprabha, the eighth Tirthankara or spiritual teacher of Jainism. The temple complex dates back to the 9th and 10th centuries CE and was patronized by various dynasties such as the Pratiharas, the Chandellas, the Tomars, and the Scindias. It is also a place of pilgrimage for Jains, especially during the festivals of Kartik Purnima and Falgun Purnima.