Which of the following describes the fall of the Soviet Union in chronological order?
A. Stalin died, Khrushchev denounced Stalin, Gorbachev reformed policies, alliances and economy crumbled, Brezhnev destabilized economy
B. Khrushchev denounced Stalin, Stalin died, Brezhnev destabilized economy, Gorbachev reformed policies, alliances and economy crumbled
C. Stalin died, Khrushchev denounced Stalin, Brezhnev destabilized economy, Gorbachev reformed policies, alliances and economy crumbled
D. Stalin died, Khrushchev denounced Stalin, alliances and economy crumbled, Brezhnev destabilized economy, Gorbachev reformed policies