Which of the following is not true regarding an effective supplier performance evaluation system? Question 9 options: 1) Suppliers should only be evaluated during the first year we do business with them after that, they do not require regular evaluation 2) Our assessment should cover multiple dimensions of supplier performance that are important to us 3) Our assessment should focus on key (critical) purchase categories and suppliers 4) We should have clear definitions of the evaluation criteria and our scoring system for each