Correct option is C
In honor of the legendary mathematician Srinivasa Ramanujan and to commemorate his 125th birth anniversary, the Government of India declared 2012 as the National Mathematics Year. This declaration was made by then Prime Minister Dr. Manmohan Singh on December 26, 2011, at a ceremony at the University of Madras. Additionally, the government also designated December 22 (Ramanujan's birthdate) as National Mathematics Day, to be observed annually