a$)$ Which option delivers the maximum profit for the supply chain: Debora$$s plan,

John$$s plan, or no promotion plan at all? Assume starting and ending inventory of

$0.(10$ points$)$

b$)$ How does the answer change if a discount of $$10$ must be given to reach the same

level of impact that the $$5$ discount received? $(5$ points$)$

c$)$ Suppose Debora$$s fears about increasing outsourcing costs come to fruition and

the cost rises to $$22/$unit for subcontracting. Does this change the decision when

the discoun