Choose from the list below the best control activity to prevent entering oral or written contracts prior to the completion of the vendor onboarding process that may result in a financial obligation to unapproved vendors. Question 57 options: 1) Regularly review approved vendors and their performance. Update the database to remove inactive vendors and those who do not meet performance standards. 2) All purchases routed through the purchasing department 3) Segregation of duties 4) Implement training for employees who communicate with vendors for purchasing