Discussion Question help

Please no plagiarism. 75-100 words for each answer. Place question above the answer.11-3. Some firmscategorize projects as revenue-enhancing, cost-reducing, and mandatory.Describe what this means.11-6. What does it meanto say that two or more investment projects are mutually exclusive?11-7. What are thelimitations of the payback period as an investment decision criterion? What areits advantages? Why do you think it is used so frequently?11-12. Under whatconditions would the payback and discounted payback methods produce identicalresults?