6. How does Net Promoter Score (NPS) work EXCEPT? a. Scale 0-6 are detractors who won't promote the item and might pass negative word-of-mouth. b. Scale 7-8 are passives who won't promote or detract the item, being neutral. C. Scale 9 - 10 are promoters who will promote the item with positive word-of-month. d. NPS can't track the health of your brand, leam if your customers like you, and determine the percentage of detractors. 7. The three elements of any optimization model are: a. Dependent variables, objective function and constraints b. Decision variables, objective function and controls c. Decision variables, objective function and constraints d. Independent variables, objective function and constraints 8. An optimization model can have: a. Only one objective b. Multiple decision variables c. Multiple constrains d. All of the above 9. About Maxi-Max Strategy, which one of following statements is INCORRECT? a. It ignores the possibility of bad outcomes b. It chooses actions that maximize the maximum outcome C. It seeks good outcomes d. It gives equal weight to good and bad outcomes 10. The pros of moving average method are EXCEPT: a. requires complicated software to calculate b. easy to understand C. straightforward to compute d. stable forecasts the cons are lagging behind the trend and not causal