5 (10 points) Not only in public procurement, but many private organizations are setting up procurement principles. Four major principles include: non-discrimination, equality, transparency and proportionality. Please explain these four principles and why they are important to purchasing. Question 4 (10 points) Complex projects require good contract management and relationship building. Why is this important and what can be some issues or problems that you can face in contract management of projects? Question 3 (10 points) There are costs associated with quality. Please describe the three types of quality costs and give some examples of each. Why is it important to control these costs and which one should we focus on