There's been funny business at Big Al's Auto Palace. Al needs a new sales associate and interviews Harry, Ken and Peggy. He does not hire any of them yet, but he gives them each a company jacket and offers to give them each a "try out." On Monday, Harry will wear the Palace jacket and try to make a sale; on Tuesday, it will be Ken's turn; and on Wednesday, it will be Peggy's turn. But Ken and Peggy are worried that Al will hire Harry on Monday if they do nothing, so (unknown to Al) they all show up on Monday at the Palace. Harry and Ken are each wearing the jacket, while Peggy has nothing to identify her as a sales agent. Who has express authority and wh ?Explain