Arrange the following events related to disintegration of the Soviet Union according to the correct chronological order.

(A) Boris Yeltsin is appointed as the head of the Communist Party of the Soviet Union.
(B) Berlin Wall falls
(C) The Communist Party hardliners stage an abortive coup against Gorbachev.
(D) Russian parliament declares its independence from the Soviet Union.

Choose the correct answer from the options given below:

(A), (B), (D), (C)

The correct answer is Option (2) → (A), (B), (D), (C)

(A) Boris Yeltsin is appointed as the head of the Communist Party of the Soviet Union.: 1985 March
(B) Berlin Wall falls:  1989 October
(D) Russian parliament declares its independence from the Soviet Union.: 1990 June
(C) The Communist Party hardliners stage an abortive coup against Gorbachev.: 1991 August