Principled Negotiation, Getting to Yes develops three negotiation concepts: (a) bottom-line; (b) trip-wire; and (c) BATNA. From the perspective of Principled Negotiation, explain each one of these concepts as well as how each should be used in a negotiation. Are they basically the same or are they different? As part of your explanations, provide an illustrative example for each concept based on your negotiating for the purchase of a new automobile