Which Option carries the maximum profit for the supply chain- Sandra's plan, Bill's plan or no promotion plan at all? How does the response change if a discount of $10 must be given to reach the same level of influence that the $5 discount received? Presume Sandra's fears about increasing outsourcing costs come to fruition as well as the cost rises to $22/unit for subcontracting. Does this alter the decision when the discount is $5?