1. Achieving commitment can be very valuable because it can affect other's expectations about your behavior and thereby the behavior they adopt in future negotiations. Commitment might not be achieved when (choose all that apply):

   		a customer may simply not pay for services rendered
   		a supplier may refuse to deliver the goods
   		a customer pay for services rendered and the supplier deliver the goods
   		one party may try to renege on the deal because the costs of completing the contract are lower than was anticipated
   		one party may try to renege on the deal because the costs of completing the contract are higher than was anticipated