In what year was the album “A” released by BIGBANG?

In what year was the album “A” released by BIGBANG?: The album “A” was released in 2015 by BIGBANG, featuring 2 tracks.
What is the most successful song from the album “A” by BIGBANG?: “BANG BANG BANG (뱅뱅뱅)” is the biggest hit from the album “A” by BIGBANG.

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