Who received the Bharat Ratna Award for the year 2013?

• A. . R. Tendulkar & P. V. Narsimha Rao
• B. . R. Tendulkar & N. T. Rama Rao
• C. . R. Tendulkar & Prof. C. N. R. Rao
• D. . R. Tendulkar & Nageshwar Rao