There are several key elements that should be done when using performance information to identify potential problems, specifically where sales people need to improve for better performance in the future. Check ALL that should be done: a. evaluate salespeople against relevant performance criteria. b. compare salesperson evaluations to identify problem areas. c. investigate problem areas to identify causes of performance problems. d. report problem areas to top management. e. determine sales management actions to eliminate causes of future problems and to solve existing problems.