Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: A 12-week Treatment, Multicenter, Randomized, Parallel-group, Blinded, Double-dummy Study to Compare the Efficacy and Safety of Indacaterol (150 µg Once Daily [od]) Delivered Via a Single Dose Dry Powder Inhaler (SDDPI) With Tiotropium (18 µg od) Delivered Via a HandiHaler®, in Patients With Moderate-to-severe COPD
Brief Summary: This study compared the lung effects of indacaterol to those of tiotropium in patients with moderate to severe chronic obstructive pulmonary disease (COPD) over a 12 week period.


Options:
A: Arm Label: Indacaterol 150 µg; Type: EXPERIMENTAL; Interventions: Drug: Indacaterol 150 µg, Drug: Placebo to salmeterol | Arm Label: Salmeterol 50 µg; Type: ACTIVE_COMPARATOR; Interventions: Drug: Salmeterol 50 µg, Drug: Placebo to indacaterol | Intervention Type: DRUG; Name: Indacaterol 150 µg; Assigned to Arm(s): Indacaterol 150 µg | Intervention Type: DRUG; Name: Salmeterol 50 µg; Assigned to Arm(s): Salmeterol 50 µg | Intervention Type: DRUG; Name: Placebo to indacaterol; Assigned to Arm(s): Salmeterol 50 µg | Intervention Type: DRUG; Name: Placebo to salmeterol; Assigned to Arm(s): Indacaterol 150 µg
B: Arm Label: Indacaterol 75 µg; Type: EXPERIMENTAL; Interventions: Drug: Indacaterol | Arm Label: Placebo; Type: PLACEBO_COMPARATOR; Interventions: Drug: Placebo to indacaterol | Intervention Type: DRUG; Name: Indacaterol; Assigned to Arm(s): Indacaterol 75 µg | Intervention Type: DRUG; Name: Placebo to indacaterol; Assigned to Arm(s): Placebo
C: Arm Label: Indacaterol 150 µg; Type: EXPERIMENTAL; Interventions: Drug: Indacaterol 150 μg, Drug: Placebo to tiotropium | Arm Label: Tiotropium 18 µg; Type: ACTIVE_COMPARATOR; Interventions: Drug: Tiotropium 18 μg, Drug: Placebo to indacaterol | Intervention Type: DRUG; Name: Indacaterol 150 μg; Assigned to Arm(s): Indacaterol 150 µg | Intervention Type: DRUG; Name: Tiotropium 18 μg; Assigned to Arm(s): Tiotropium 18 µg | Intervention Type: DRUG; Name: Placebo to indacaterol; Assigned to Arm(s): Tiotropium 18 µg | Intervention Type: DRUG; Name: Placebo to tiotropium; Assigned to Arm(s): Indacaterol 150 µg
D: Arm Label: Indacaterol 300 μg plus placebo to formoterol; Type: EXPERIMENTAL; Interventions: Drug: Indacaterol, Drug: Placebo to formoterol | Arm Label: Indacaterol 600 μg plus placebo to formoterol; Type: EXPERIMENTAL; Interventions: Drug: Indacaterol, Drug: Placebo to formoterol | Arm Label: Formoterol 12 μg plus placebo to indacaterol; Type: ACTIVE_COMPARATOR; Interventions: Drug: Formoterol, Drug: Placebo to indacaterol | Arm Label: Placebo to indacaterol plus placebo to formoterol; Type: PLACEBO_COMPARATOR; Interventions: Drug: Placebo to indacaterol, Drug: Placebo to formoterol | Intervention Type: DRUG; Name: Indacaterol; Assigned to Arm(s): Indacaterol 300 μg plus placebo to formoterol, Indacaterol 600 μg plus placebo to formoterol | Intervention Type: DRUG; Name: Formoterol; Assigned to Arm(s): Formoterol 12 μg plus placebo to indacaterol | Intervention Type: DRUG; Name: Placebo to indacaterol; Assigned to Arm(s): Formoterol 12 μg plus placebo to indacaterol, Placebo to indacaterol plus placebo to formoterol | Intervention Type: DRUG; Name: Placebo to formoterol; Assigned to Arm(s): Indacaterol 300 μg plus placebo to formoterol, Indacaterol 600 μg plus placebo to formoterol, Placebo to indacaterol plus placebo to formoterol

Answer: C