Read the text and determine if the sentence is true (see options at the end):

TNT is a Norwegian heavy metal band from Trondheim, formed in 1982. The band has released twelve studio albums, three EPs and three live albums while going through numerous line-up changes since its formation. Guitarist Ronni Le Tekrø is the only consistent member of TNT. TNT has sold between 4-5 million albums worldwide as of 2016.

Sentence: TNT is a Norwegian heavy metal band from Trondheim, formed in 1982, is an all-boy band. 
Pick your answer from:
 a). Yes;
 b). It's impossible to say;
 c). No;
b).