I don't know what I was reading there at all to be honest with you, but it certainly wasn't advice. That *yes* matchtext is a no go. You're going to get "Correct!" if yes is mentioned in the string totally not related for example:

Darren Hayes is lame.

Correct!

I agree with Dave there, it's an unreliable source of help.

Code:
on 1:text[color:red]*[/color]:!question*:#: {
  /msg $chan yes or no
  /msg $chan A) yes
  /msg $chan B) no
}


The stuff in red shouldn't be there. So none of that code will truly work as planned.

/help On Text

I'd actually use Token Identifiers for these kind of tasks.

/help Token Identifiers