Which of the Following Statements About Soviet Intervention During the Cold

Which of the following statements about Soviet intervention during the Cold War is true?

A) The Soviet Union refused to send its military to intervene in European countries such as Hungary and Czechoslovakia,because it feared retaliation from the United States.
B) The Soviet Union intervened only in countries with socialist or Marxist governments,since they were already Soviet allies.
C) The Soviet Union rarely intervened in the developing world,because it thought poor countries were likely to become communist without Soviet help.
D) The Soviet Union sent arms and advisers to many developing countries in hopes of helping sympathetic groups seize power.