The correct options are
A P. V. Narasimha Rao
B Swami Ramananda Theertha
C B. Ramakishan Rao
P. V. Narasimha Rao, Swami Ramananda Theertha and B.Ramakishan Rao were all members of the Hyderabad State Congress. P. V. Narasimha Rao later became Prime Minister of India.