pyq/2012/prelims/19

Which of the following is /are cited by the scientists as evidence/evidences for the continued expansion of the universe?

1. Detection of microwaves in space

2. Observation of the redshift phenomenon in space

3. Movement of asteroids in space

4. The occurrence of supernova explosions in space

(A) 2 only

(B) 1 and 2

(C) 1, 3 and 4

(D) None of the above