Consider the followings about Raja Ramanna :
(a) He had directed the team of scientists which carried out the test of a nuclear device.
(b) He was awarded by Padma Vibhushan in 1976.
(c) He was made Union Minister of State for Defence in 1990.
(d) He had written a book entitled ‘The Structure of Music in Raga and Western System’.
Select the correct answer by using the code given below:
1. (a) and (b)
2. (a), (b) and (c)
3. (d) only
4. (a), (b), (c) and (d)