No. (Option 2.)

Not knowing who either of them are at first glance, you simply clear your throat. This alerts them to your presence, as they both look in your direction. Naturally, neither of them recognize you either.

"Oh!" one of them exclaims. "Did we interrupt the security guard from his little beer break?!"

"What kind of security would I be, considering I'm not carrying a gun?!" you ask.

"The same kind of robbers we'd be," the other woman replies, "as we're also weaponless!"

"Oh!" you tell them. "Well, I thought you were robbing us, but there goes that idea!... Though I'm not sure I can automatically believe neither of you have a gun simply because you say so!"

"I can understand that...," the first one says.

"...But why should we believe you?!" the other finishes.

The three of you stand silently for a while.