Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: A Phase 3, Multicenter, Randomized, Open-Label Study to Investigate the Efficacy and Safety of Sofosbuvir/GS-5885 Fixed-Dose Combination (FDC) +/- Ribavirin for 12 and 24 Weeks in Treatment-Naive Subjects With Chronic Genotype 1 HCV Infection.
Brief Summary: The purpose of this study is to evaluate the safety, tolerability, and antiviral efficacy of ledipasvir (LDV)/sofosbuvir (SOF) fixed-dose combination (FDC) tablets with or without ribavirin (RBV) administered for 12 and 24 weeks in treatment-naive subjects with chronic genotype 1 HCV infection.


Options:
A: Arm Label: LDV/SOF 12 weeks; Type: EXPERIMENTAL; Interventions: Drug: LDV/SOF | Arm Label: LDV/SOF+RBV 12 weeks; Type: EXPERIMENTAL; Interventions: Drug: LDV/SOF, Drug: RBV | Arm Label: LDV/SOF 24 weeks; Type: EXPERIMENTAL; Interventions: Drug: LDV/SOF | Arm Label: LDV/SOF+RBV 24 weeks; Type: EXPERIMENTAL; Interventions: Drug: LDV/SOF, Drug: RBV | Intervention Type: DRUG; Name: LDV/SOF; Assigned to Arm(s): LDV/SOF 12 weeks, LDV/SOF 24 weeks, LDV/SOF+RBV 12 weeks, LDV/SOF+RBV 24 weeks | Intervention Type: DRUG; Name: RBV; Assigned to Arm(s): LDV/SOF+RBV 12 weeks, LDV/SOF+RBV 24 weeks
B: Arm Label: Control; Type: ACTIVE_COMPARATOR; Interventions: Drug: Placebo, Drug: Pegylated interferon alfa-2a, Drug: Ribavirin | Arm Label: 12 Week Cohort; Type: EXPERIMENTAL; Interventions: Drug: Daclatasvir, Drug: Pegylated interferon alfa-2a, Drug: Ribavirin | Arm Label: 16 Week Cohort; Type: EXPERIMENTAL; Interventions: Drug: Daclatasvir, Drug: Pegylated interferon alfa-2a, Drug: Ribavirin | Intervention Type: DRUG; Name: Placebo; Assigned to Arm(s): Control | Intervention Type: DRUG; Name: Daclatasvir; Assigned to Arm(s): 12 Week Cohort, 16 Week Cohort | Intervention Type: DRUG; Name: Pegylated interferon alfa-2a; Assigned to Arm(s): 12 Week Cohort, 16 Week Cohort, Control | Intervention Type: DRUG; Name: Ribavirin; Assigned to Arm(s): 12 Week Cohort, 16 Week Cohort, Control
C: Arm Label: 1. Placebo + PEG + RBV; Type: PLACEBO_COMPARATOR; Interventions: Biological: Peginterferon alfa-2b (PEG), Drug: Ribavirin (RBV), Drug: Placebo | Arm Label: 2. Boceprevir + PEG + RBV - 24 Weeks (RGT); Type: EXPERIMENTAL; Interventions: Biological: Peginterferon alfa-2b (PEG), Drug: Ribavirin (RBV), Drug: Boceprevir | Arm Label: 3. Boceprevir + PEG + RBV - 44 Weeks; Type: EXPERIMENTAL; Interventions: Biological: Peginterferon alfa-2b (PEG), Drug: Ribavirin (RBV), Drug: Boceprevir | Intervention Type: BIOLOGICAL; Name: Peginterferon alfa-2b (PEG); Assigned to Arm(s): 1. Placebo + PEG + RBV, 2. Boceprevir + PEG + RBV - 24 Weeks (RGT), 3. Boceprevir + PEG + RBV - 44 Weeks | Intervention Type: DRUG; Name: Ribavirin (RBV); Assigned to Arm(s): 1. Placebo + PEG + RBV, 2. Boceprevir + PEG + RBV - 24 Weeks (RGT), 3. Boceprevir + PEG + RBV - 44 Weeks | Intervention Type: DRUG; Name: Placebo; Assigned to Arm(s): 1. Placebo + PEG + RBV | Intervention Type: DRUG; Name: Boceprevir; Assigned to Arm(s): 2. Boceprevir + PEG + RBV - 24 Weeks (RGT), 3. Boceprevir + PEG + RBV - 44 Weeks
D: Arm Label: Arm 1; Type: EXPERIMENTAL; Interventions: Drug: TMC435, Drug: PSI-7977 (GS7977), Drug: Ribavirin | Arm Label: Arm 2; Type: EXPERIMENTAL; Interventions: Drug: TMC435, Drug: PSI-7977 (GS7977) | Arm Label: Arm 3; Type: EXPERIMENTAL; Interventions: Drug: TMC435, Drug: PSI-7977 (GS7977), Drug: Ribavirin | Arm Label: Arm 4; Type: EXPERIMENTAL; Interventions: Drug: TMC435, Drug: PSI-7977 (GS7977) | Intervention Type: DRUG; Name: TMC435; Assigned to Arm(s): Arm 1, Arm 2, Arm 3, Arm 4 | Intervention Type: DRUG; Name: PSI-7977 (GS7977); Assigned to Arm(s): Arm 1, Arm 2, Arm 3, Arm 4 | Intervention Type: DRUG; Name: Ribavirin; Assigned to Arm(s): Arm 1, Arm 3

Answer: A