Gandikota canyon of South India was created by which one of the following rivers ?

1. The question asks to identify the river responsible for creating the Gandikota canyon in South India. 2. The Gandikota canyon, often referred to as the 'Grand Canyon of India', is located in the Kadapa district of Andhra Pradesh. 3. This spectacular gorge has been formed by the Pennar river cutting through the Erramala hills over thousands of years. 4. The Cauvery river flows further south through Karnataka and Tamil Nadu. 5. The Manjira river is a tributary of the Godavari, flowing through Maharashtra, Karnataka, and Telangana. 6. The Tungabhadra river is a major tributary of the Krishna river. 7. Therefore, the Pennar river created the Gandikota canyon.