A recent movie titled 'The Man Who Knew Infinity' is based on the biography of

1. A

   S. Ramanujan

   The Man Who Knew Infinity (2015) is a biographical film on the mathematician Srinivasa Ramanujan and his Cambridge years with G. H. Hardy, based on Robert Kanigel’s book of the same title. That is why (a) is the official key.

2. B

   S. Chandrasekhar

   S. Chandrasekhar is the astrophysicist of the Chandrasekhar limit; he is not the subject of this film. This option is not the key.

3. C

   S. N. Bose

   S. N. Bose of Bose–Einstein statistics is another Indian physicist, not the film’s subject. This option is wrong.

4. D

   C. V. Raman

   C. V. Raman of the Raman effect is a Nobel physicist, not the man portrayed in this movie. This option is not the key.

Summary. Official key is (a) S. Ramanujan. The film follows Ramanujan from Madras to Trinity College, Cambridge, and the Hardy–Ramanujan collaboration on number theory. Chandrasekhar, Bose and Raman are other celebrated Indian scientists whom Prelims often lists beside Ramanujan. The title phrase is Ramanujan’s popular biography, not a physics biopic. Only (a) is the correct life.