An ungrounded receptical outlet is to be replaced by a ground fault circuit interupter receptical. There is no provision for grounding within the receptical box. Which one of the following is NOT an option when this recepticle is being replaced?

An ungrounded receptical outlet is to be replaced by a ground fault circuit interupter receptical. There is no provision for grounding within the receptical box. Which one of the following is NOT an option when this recepticle is being replaced?