B1A4 unveils comeback teaser photo for Gongchan

The boys of B1A4 have announced that they’ll be making their comeback this month with their second mini-album!
On September 8th (9th in Korea), the final teaser image for member Gongchan was released through their official homepage.
The digital release for their second mini-album is set for September 16th.
After viewing all the teaser images, which one was your favorite?