Operation Management Questions

Original work******answer both questions and provide references**** Graduate level work required!!!!!!

1.Should a firm attempt to have fewer or more suppliers? What are the advantages and disadvantages of each approach? Should be 200-250 words

2. How is process selection related to product design and capacity determination?  Should be 200-250 words

3. Explain how MRP can decrease a company’s inventory while improving its customer service level. Include a real-life example. Should be 200-250 words.