"Hana no Na" (花の名 ) is the thirteenth single by Bump of Chicken, released on October 24, 2007. The title track is from the album "Orbital Period". The single peaked at #1 on the Oricon Weekly Charts in front of "Mayday" (メーデー ) , which was released on the same day.

Based on that paragraph can we conclude that this sentence is true?
There are 12 other singles in bump of chicken


 a). Yes
 b). It's impossible to say
 c). No