Bob,
Good luck arguing w/Crystal on their ambiguous questions - been there; done that; didn't get the T-shirt. The response(s) I got back from them were, "We know you can do that, but why would you want to...?" - (i.e. doesn't matter, you still failed - kinda like having a question that starts out with "In your opinion..." marked wrong on a final exam). I've heard - but haven't verified - that ACE for 9.0 is less ambiguous than what it was for 8.5.