question 2:

the buyback contract coordinates the supply chain by (select all that apply)

a. increasing retailer overage cost

b. decreasing retailer overage cost

c. increasing supplier underage cost

d. decreasing supplier underage cost

question 3: in the EOQ model, the optimal order quantity increases when the setup cost increases.

- True or False

question 5: which of the following practices are countermeasures for the bullwhip effect? select all that apply

a. VMI

b. cross-docking

c. ship full truck-load to take the advantage of economy of scale