Supply management very small case study: Vignette "Fact or Fiction" attached 1.How critical is the sales forecast in this situation? How does this set of numbers affect MRP systems? 2.What are some reasons for changes in the sales forecast? 3. What factors might account for inaccurate inventory files? 4. What action steps and/or plans should these three managers take to solve this problem? 5. Is the concept of demand management relevant in this situation?