Correct Option: C

Brihaddeshi is a classical Sanskrit text (dated 6th to 8th century A.D) on Indian classical music that speaks directly of the raga and distinguishes the classical (marga) and the folk (desi). It provides the basis for the emergence of the Mela system of classifying the Ragas. The term 'raga' first occurs in a technical context in the Brihaddeshi, where it is described as "a combination of tones which, with beautiful illuminating graces, pleases the people in general".