Arrange the following events related to the timeline of European Integration according to the chronological order.

(A) The Lisbon Treaty came into being
(B) European Atomic Energy Community was established
(C) First direct elections to the European Parliament.
(D) Euro currency was introduced in 12 EU countries.

Choose the correct answer from the options given below:

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

The correct answer is Option (3) → (B), (C), (D), (A)

(B) European Atomic Energy Community was established. (1957, Treaty of Rome).
(C) First direct elections to the European Parliament. 1979
(D) Euro currency was introduced in 12 EU countries. 2002
(A) The Lisbon Treaty came into being 2009