Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: Varenicline Versus Nicotine Replacement for Methadone-Maintained Smokers
Brief Summary: RATIONALE: Varenicline, the nicotine patch, and nicotine gum help people stop smoking. It is not yet known whether varenicline is more effective than the nicotine patch given together with nicotine gum in helping smokers quit smoking.

PURPOSE: This randomized clinical trial is studying varenicline to see how well it works compared with the nicotine patch given together with nicotine gum in helping smokers in a methadone treatment program stop smoking.


Options:
A: Arm Label: High Intensity Counseling + Long Acting NRT + PRN NRT; Type: EXPERIMENTAL; Interventions: Drug: High Intensity Counseling + Long Acting NRT + PRN NRT | Arm Label: High Intensity Counseling + bupropion + PRN NRT; Type: EXPERIMENTAL; Interventions: Drug: High Intensity Counseling + bupropion + PRN NRT | Arm Label: High Intensity Counseling + varenicline + PRN NRT; Type: EXPERIMENTAL; Interventions: Drug: High Intensity Counseling + varenicline + PRN NRT | Arm Label: High Intensity Counseling + Long Acting NRT; Type: EXPERIMENTAL; Interventions: Drug: High Intensity Counseling + Long Acting NRT | Arm Label: High Intensity Counseling + bupropion; Type: EXPERIMENTAL; Interventions: Drug: High Intensity Counseling + bupropion | Arm Label: High Intensity Counseling + varenicline; Type: EXPERIMENTAL; Interventions: Drug: High Intensity Counseling + varenicline | Arm Label: Low Intensity Counseling + Long Acting NRT + PRN NRT; Type: EXPERIMENTAL; Interventions: Drug: Low Intensity Counseling + Long Acting NRT + PRN NRT | Arm Label: Low Intensity Counseling + bupropion + PRN NRT; Type: EXPERIMENTAL; Interventions: Drug: Low Intensity Counseling + bupropion + PRN NRT | Arm Label: Low Intensity Counseling + varenicline + PRN NRT; Type: EXPERIMENTAL; Interventions: Drug: Low Intensity Counseling + varenicline + PRN NRT | Arm Label: Low Intensity Counseling + Long Acting NRT; Type: EXPERIMENTAL; Interventions: Drug: Low Intensity Counseling + Long Acting NRT | Arm Label: Low Intensity Counseling + bupropion; Type: EXPERIMENTAL; Interventions: Drug: Low Intensity Counseling + bupropion | Arm Label: Low Intensity Counseling + varenicline; Type: EXPERIMENTAL; Interventions: Drug: Low Intensity Counseling + varenicline | Intervention Type: DRUG; Name: High Intensity Counseling + Long Acting NRT + PRN NRT; Assigned to Arm(s): High Intensity Counseling + Long Acting NRT + PRN NRT | Intervention Type: DRUG; Name: High Intensity Counseling + bupropion + PRN NRT; Assigned to Arm(s): High Intensity Counseling + bupropion + PRN NRT | Intervention Type: DRUG; Name: High Intensity Counseling + varenicline + PRN NRT; Assigned to Arm(s): High Intensity Counseling + varenicline + PRN NRT | Intervention Type: DRUG; Name: High Intensity Counseling + Long Acting NRT; Assigned to Arm(s): High Intensity Counseling + Long Acting NRT | Intervention Type: DRUG; Name: High Intensity Counseling + bupropion; Assigned to Arm(s): High Intensity Counseling + bupropion | Intervention Type: DRUG; Name: High Intensity Counseling + varenicline; Assigned to Arm(s): High Intensity Counseling + varenicline | Intervention Type: DRUG; Name: Low Intensity Counseling + Long Acting NRT + PRN NRT; Assigned to Arm(s): Low Intensity Counseling + Long Acting NRT + PRN NRT | Intervention Type: DRUG; Name: Low Intensity Counseling + bupropion + PRN NRT; Assigned to Arm(s): Low Intensity Counseling + bupropion + PRN NRT | Intervention Type: DRUG; Name: Low Intensity Counseling + varenicline + PRN NRT; Assigned to Arm(s): Low Intensity Counseling + varenicline + PRN NRT | Intervention Type: DRUG; Name: Low Intensity Counseling + Long Acting NRT; Assigned to Arm(s): Low Intensity Counseling + Long Acting NRT | Intervention Type: DRUG; Name: Low Intensity Counseling + bupropion; Assigned to Arm(s): Low Intensity Counseling + bupropion | Intervention Type: DRUG; Name: Low Intensity Counseling + varenicline; Assigned to Arm(s): Low Intensity Counseling + varenicline
B: Arm Label: Nicotine-inclusive e-cigarettes; Type: EXPERIMENTAL; Interventions: Other: Electronic Cigarette and behavioural change support. | Arm Label: Nicotine-free e-cigarettes; Type: EXPERIMENTAL; Interventions: Other: Nicotine-Free Electronic Cigarette and behavioural change support. | Arm Label: Nicotine Replacement Therapy (NRT); Type: ACTIVE_COMPARATOR; Interventions: Other: Nicotine Replacement Therapy and behavioural change support. | Intervention Type: OTHER; Name: Electronic Cigarette and behavioural change support.; Assigned to Arm(s): Nicotine-inclusive e-cigarettes | Intervention Type: OTHER; Name: Nicotine-Free Electronic Cigarette and behavioural change support.; Assigned to Arm(s): Nicotine-free e-cigarettes | Intervention Type: OTHER; Name: Nicotine Replacement Therapy and behavioural change support.; Assigned to Arm(s): Nicotine Replacement Therapy (NRT)
C: Arm Label: Arm I; Type: EXPERIMENTAL; Interventions: Drug: varenicline | Arm Label: Arm II; Type: PLACEBO_COMPARATOR; Interventions: Other: placebo | Arm Label: Arm III; Type: ACTIVE_COMPARATOR; Interventions: Drug: nicotine | Intervention Type: DRUG; Name: nicotine; Assigned to Arm(s): Arm III | Intervention Type: DRUG; Name: varenicline; Assigned to Arm(s): Arm I | Intervention Type: OTHER; Name: placebo; Assigned to Arm(s): Arm II
D: Arm Label: Arm I (varenicline); Type: EXPERIMENTAL; Interventions: Drug: varenicline | Arm Label: Arm II (nicotine patch); Type: ACTIVE_COMPARATOR; Interventions: Drug: nicotine patch | Intervention Type: DRUG; Name: varenicline; Assigned to Arm(s): Arm I (varenicline) | Intervention Type: DRUG; Name: nicotine patch; Assigned to Arm(s): Arm II (nicotine patch)

Answer: C