Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: A Pilot Randomized, Placebo-Controlled, Crossover Study of the Effect of the Nicotine Nasal Spray and Varenicline on Cigarette Smoking Following Methadone Dosing in Methadone-Maintained Patients
Brief Summary: The objective is to provide a preliminary test of the ability of two pharmacological treatments, the nicotine nasal spray and varenicline, relative to placebos, to reduce smoking during the 4 hours following methadone dosing.


Options:
A: Arm Label: Order 1; Type: EXPERIMENTAL; Interventions: Drug: Nicotine Nasal Spray, Drug: Varenicline, Drug: Placebo Nasal Spray, Drug: Placebo Varenicline | Arm Label: Order 2; Type: EXPERIMENTAL; Interventions: Drug: Nicotine Nasal Spray, Drug: Varenicline, Drug: Placebo Nasal Spray, Drug: Placebo Varenicline | Arm Label: Order 3; Type: EXPERIMENTAL; Interventions: Drug: Nicotine Nasal Spray, Drug: Varenicline, Drug: Placebo Nasal Spray, Drug: Placebo Varenicline | Arm Label: Order 4; Type: EXPERIMENTAL; Interventions: Drug: Nicotine Nasal Spray, Drug: Varenicline, Drug: Placebo Nasal Spray, Drug: Placebo Varenicline | Intervention Type: DRUG; Name: Nicotine Nasal Spray; Assigned to Arm(s): Order 1, Order 2, Order 3, Order 4 | Intervention Type: DRUG; Name: Varenicline; Assigned to Arm(s): Order 1, Order 2, Order 3, Order 4 | Intervention Type: DRUG; Name: Placebo Nasal Spray; Assigned to Arm(s): Order 1, Order 2, Order 3, Order 4 | Intervention Type: DRUG; Name: Placebo Varenicline; Assigned to Arm(s): Order 1, Order 2, Order 3, Order 4
B: Arm Label: NRT arm; Type: ACTIVE_COMPARATOR; Interventions: Drug: Nicotine Replacement Therapy (NRT) | Arm Label: NRT and HIV Tailored Quit Smoking Counseling; Type: ACTIVE_COMPARATOR; Interventions: Drug: Nicotine Replacement Therapy (NRT), Behavioral: HIV Tailored Quit Smoking Counseling | Arm Label: Varenicline (VR) Arm; Type: ACTIVE_COMPARATOR; Interventions: Drug: Varenicline | Arm Label: Varenicline (VR) and HIV Tailored Quit Smoking Counseling; Type: ACTIVE_COMPARATOR; Interventions: Drug: Varenicline, Behavioral: HIV Tailored Quit Smoking Counseling | Intervention Type: DRUG; Name: Nicotine Replacement Therapy (NRT); Assigned to Arm(s): NRT and HIV Tailored Quit Smoking Counseling, NRT arm | Intervention Type: DRUG; Name: Varenicline; Assigned to Arm(s): Varenicline (VR) Arm, Varenicline (VR) and HIV Tailored Quit Smoking Counseling | Intervention Type: BEHAVIORAL; Name: HIV Tailored Quit Smoking Counseling; Assigned to Arm(s): NRT and HIV Tailored Quit Smoking Counseling, Varenicline (VR) and HIV Tailored Quit Smoking Counseling
C: Arm Label: Brief Treatment; Type: ACTIVE_COMPARATOR; Interventions: Drug: Bupropion and NRT | Arm Label: Extended Bupropion/Low Contact; Type: ACTIVE_COMPARATOR; Interventions: Drug: Bupropion and NRT | Arm Label: Extended Placebo/Low Contact; Type: PLACEBO_COMPARATOR; Interventions: Drug: Bupropion and NRT | Arm Label: Extended Bupropion/High Contact; Type: ACTIVE_COMPARATOR; Interventions: Drug: Bupropion and NRT | Arm Label: Extended Placebo/High Contact; Type: PLACEBO_COMPARATOR; Interventions: Drug: Bupropion and NRT | Intervention Type: DRUG; Name: Bupropion and NRT; Assigned to Arm(s): Brief Treatment, Extended Bupropion/High Contact, Extended Bupropion/Low Contact, Extended Placebo/High Contact, Extended Placebo/Low Contact
D: Arm Label: 1; Type: ACTIVE_COMPARATOR; Interventions: Drug: Chantix, Behavioral: Standard Counseling | Arm Label: 2; Type: EXPERIMENTAL; Interventions: Drug: Chantix, Behavioral: Adherence Counseling, Behavioral: Standard Counseling | Intervention Type: DRUG; Name: Chantix; Assigned to Arm(s): 1, 2 | Intervention Type: BEHAVIORAL; Name: Adherence Counseling; Assigned to Arm(s): 2 | Intervention Type: BEHAVIORAL; Name: Standard Counseling; Assigned to Arm(s): 1, 2

Answer: A