4. Which of the following statements is/are correct? i. The economic order quantity determines the optimum order size for individual inventory items. ii. The economic order quantity cannot be used in a manufacturing organisation. iii. The economic order quantity minimises the sum of the ordering and carrying costs. -A. i B. ii C. i and iii D. All of the given answers 10. Which of the following can have a negative impact on a customer's profitability? A. Number of required sales contacts (phone calls, visits etc.) B. Accounts receivable collection time C. Purchase order amendments D. All of the given answers