A Person with a Long-Term Opioid Addiction

A person with a long-term opioid addiction

A) will rarely experience constipation since the opioids do not influence the muscle (meiotic) movements of the gastrointestinal tract.
B) will become totally tolerant to the respiratory depressant effects of their drug of choice.
C) will achieve the "rush" or "flash" experience by switching to another class of drugs.
D) is prone to constipation due to the effects of narcotics in the gastrointestinal tract.