Customer service provides a huge competitive advantage by ensuring customer loyalty, differentiating products, reducing marketing expenses, and increasing company profit. Examine a few models that Woolworths (South Africa) may apply to better serve its customers in a critical manner. Question 4 (20 Marks) ERP systems put a strong emphasis on integrating tasks and data across the organization. Use your own examples and critically examine the benefits and drawbacks of ERP systems at Woolworths (South Africa). Question 5 (20 Marks) The first step toward more extensive supply chain integration is internal integration. Using Woolworths (South Africa) as a reference critically discuss what internal integration and how well do the Woolworths internal functions integrate. Make use of practical examples to support your answer.