The correct option is C Rigveda
The Rigveda is the most ancient work of Indian literature. It deals with hymns of praise for recitation. It also describes the political, social, and religious matters of the Aryans residing in the Saptsindhu region.
The Samveda focuses on the chanting of these verses; the Yajurveda explains how to perform religious rituals; the Atharvaveda describes various incantations and rituals.