The correct option is C Arundhati
The term Rishi was used for the Vedic hymn writers during the Vedic age. The Rishis were basically the creators or composers of Vedas. Various females Rishikas are mentioned in Rig Veda and Sam Veda as a contributor to Vedic scriptures. Viswavara, Apala and Ghosha alongwith Lopamudra, Devayani etc are mentioned in Rig Veda.