I remember learning this, it should be A
Answer: D -Established that genocide was an international crime
In 1945, a series of 13 trials were conducted in Nuremberg, Germany between 1945-1949. 24 Nazis who were tried were all sentenced to death. The impact of this Nuremberg trial was that genocide was established as an international crime.
The policy established by Mikhail Gorbachev was called glasnost and it can best be described as the policy of open discussion of political and social issues, which resulted in changes to the Soviet political structure. The correct option among all the options that are given in the question is the second option.