Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: A Two-Week, Randomized, Modified-Blind, Double-Dummy, Parallel-Group Efficacy and Safety Study of Arformoterol Tartrate Inhalation Solution Twice-Daily, Tiotropium Once-Daily, and Arformoterol Tartrate Inhalation Solution Twice-Daily and Tiotropium Once Daily in Subjects With Chronic Obstructive Pulmonary Disease
Brief Summary: The purpose of this study is to evaluate and compare the efficacy of arformoterol twice a day and tiotropium once a day (dosed sequentially) versus tiotropium once a day alone in subjects with Chronic Obstructive Pulmonary Disease (COPD).


Options:
A: Intervention Type: DRUG; Name: Formoterol; Assigned to Arm(s): N/A
B: Arm Label: Arformoterol 15 mcg twice daily; Type: ACTIVE_COMPARATOR; Interventions: Drug: Arformoterol Tartrate Inhalation Solution, Drug: Placebo | Arm Label: Tiotropium 18 mcg once daily; Type: ACTIVE_COMPARATOR; Interventions: Drug: Tiotropium, Drug: Placebo | Arm Label: Arformoterol /Tiotropium; Type: EXPERIMENTAL; Interventions: Drug: Arformoterol and Tiotropium | Intervention Type: DRUG; Name: Arformoterol Tartrate Inhalation Solution; Assigned to Arm(s): Arformoterol 15 mcg twice daily | Intervention Type: DRUG; Name: Tiotropium; Assigned to Arm(s): Tiotropium 18 mcg once daily | Intervention Type: DRUG; Name: Arformoterol and Tiotropium; Assigned to Arm(s): Arformoterol /Tiotropium | Intervention Type: DRUG; Name: Placebo; Assigned to Arm(s): Arformoterol 15 mcg twice daily, Tiotropium 18 mcg once daily
C: 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
D: Arm Label: Indacaterol 150 μg; Type: EXPERIMENTAL; Interventions: Drug: Indacaterol 150 μg, Drug: Placebo to Salmeterol | Arm Label: Placebo; Type: PLACEBO_COMPARATOR; Interventions: Drug: Placebo to Indacaterol, 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): Placebo, Salmeterol 50 μg | Intervention Type: DRUG; Name: Placebo to Salmeterol; Assigned to Arm(s): Indacaterol 150 μg, Placebo

Answer: B