You share an office with a co-worker, who is at your job level, and who is continually disruptive. This makes it difficult for you to concentrate on your job. You should: A. request a change in offices, since it is impossible for people to really change. B. write a memo to your co-worker and send a copy to their supervisor, carefully articulating your problem. C. first discuss this problem with your co-worker, and if that fails to get the results you want, discuss with your supervisor. D. wait until your performance begins to falter, so that you have something concrete to show how much you have been affected by the disruptions