Which Soviet leader's name should be placed in the blank?
· Joseph Stalin- 1922-1953
· Nikita Khruschev- 1953-1964
· Leonid Brezhnev- 1964-1982
· Yuri Adnropov- 1982-1984
· Konstantin Chernenko- 1985-1985
· __________ - 1985-1990


A)
Boris Yeltsin


B)
Nikolai Bulganin


C)
Gregory Malenkov


D)
Mikhail Gorbachev