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

In what year was the album “Class A” released by miss A?: The album “Class A” was released in 2011 by miss A, featuring 13 tracks.
What is the most successful song from the album “Class A” by miss A?: “Good-Bye Baby” is the biggest hit from the album “Class A” by miss A.
What are the main songs from the album “Class A” by miss A?: The main songs from the album “Class A” by miss A are “Good-Bye Baby”, “Good-Bye Baby”, “Breathe”, and “Bad Girl Good Girl”.

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