Answers: Both B and C - These two choices are considered the best for a long-term heroin addict, and can be administered within a halfway house-type environment in most regions. Behavior should be watched, urine samples taken, and counseling meetings should be scheduled to best promote abstinence for this client. As this man has a long history of one of the most difficult addictions, he should be expected to relapse. Urine samples should be unscheduled and behavior should be observed closely even after lab results test negative. A methadone program may not be ideal as some chemicals can be used to enhance the effect of the methadone and he is sophisticated in the use of drugs.