Just as a note, and this is not legal advice, foreclosure is a legal process. So if asked directly you might run the risk of legal entanglement by not answering truthfully. The first response may indeed correct. However, if the owner is listed as the occupant (the title shows that they owner lives on the property), then it is possible that if a legal notice is served, those serving it (usually LA County Deputy Sheriffs or process servers) expect to have the person that answers the door sign the acceptance. If you are not the legal owner then that would be apparent at that time.
It is frequent that those in foreclosure have other financial difficulties (otherwise why would they be in foreclosure?) so make sure to keep yourself out of their problems.