All of the Following Have Been Found to Be True

All of the following have been found to be true about "ultra rapid" methods of narcotics withdrawal EXCEPT

A) it exposes patients to the risk of drug-induced coma.
B) patients receive opiate antagonists after coma is induced.
C) it is more effective in helping the client achieve long-term abstinence than traditional methadone-assisted withdrawal.
D) it is no more effective in helping the client achieve long-term abstinence than traditional methadone-assisted withdrawal.