In what year was the album “Do U Wanna B?” released by Block B?

In what year was the album “Do U Wanna B?” released by Block B?: The album “Do U Wanna B?” was released in 2011 by Block B, featuring 3 tracks.
What is the most successful song from the album “Do U Wanna B?” by Block B?: “Wanna B” is the biggest hit from the album “Do U Wanna B?” by Block B.

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