http://pokemondb.net/pokebase/107289/how-you-check-how-many-volcanic-ash-you-have-your-soot-sack-ruby
I dont know how to show the image of this question from pokebase,but if you see this from pokease,u can see there were 2 answers given where it is green in colour yet there was no BA.
The answer that was selected as BA was hidden, its a glitch with the number pokemaster is trying to fix.