The correct options are
C Hindustani
D Karnatic
Indian Classical Music reached its peak during the medieval period. The Rajputs (800-1200 A.D.) in the north, the Cholas in the south took great interest. There were two main types or schools of music - the Hindustani and the Karnatic schools of music. Besides these two, folk music was also present, passed orally from generation to generation.