In what year was the album “Rollin'” released by Brave Girls?

In what year was the album “Rollin'” released by Brave Girls?: The album “Rollin'” was released in 2017 by Brave Girls, featuring 5 tracks.
What is the most successful song from the album “Rollin'” by Brave Girls?: “Rollin’ (롤린)” is the biggest hit from the album “Rollin'” by Brave Girls.

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