Which of the following were reasons for the soviet Union's collapse?
1. Satellite nations declared independence.
2. The soviet Union could not complete economically with the West.
3. Soviet citizens demanded political and economic reforms.
4. The United States beat the Soviet Union in a violent battle at stalingrad.
Answer choices:
A. i and ii only
B. i and iv only
C. iii and iv only
D. i ii and iii.