Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: A Multicenter, Randomized, Double-blind, Single-dose Study to Assess the Effect of the QAB149 and NVA237 Combination Versus QAB149 Alone on Inspiratory Capacity in Patients With Moderate or Severe COPD.
Brief Summary: The study purpose is to evaluate the effect of QAB149

* NVA237 vs. QAB149 on static lung hyperinflation.


Options:
A: Arm Label: Sequence A; Type: PLACEBO_COMPARATOR; Interventions: Drug: QAB149, Drug: Placebo | Arm Label: Sequence B; Type: ACTIVE_COMPARATOR; Interventions: Drug: QAB149, Drug: NVA237 | Intervention Type: DRUG; Name: QAB149; Assigned to Arm(s): Sequence A, Sequence B | Intervention Type: DRUG; Name: Placebo; Assigned to Arm(s): Sequence A | Intervention Type: DRUG; Name: NVA237; Assigned to Arm(s): Sequence B
B: Arm Label: 1; Type: EXPERIMENTAL; Interventions: Drug: Aclidinium Bromide/Formoterol Fumarate | Arm Label: 2; Type: EXPERIMENTAL; Interventions: Drug: Aclidinium Bromide/Formoterol Fumarate | Arm Label: 3; Type: ACTIVE_COMPARATOR; Interventions: Drug: Aclidinium Bromide | Arm Label: 4; Type: ACTIVE_COMPARATOR; Interventions: Drug: Formoterol Fumarate | Arm Label: 5; Type: PLACEBO_COMPARATOR; Interventions: Drug: Placebo | Intervention Type: DRUG; Name: Aclidinium Bromide/Formoterol Fumarate; Assigned to Arm(s): 1 | Intervention Type: DRUG; Name: Aclidinium Bromide/Formoterol Fumarate; Assigned to Arm(s): 2 | Intervention Type: DRUG; Name: Aclidinium Bromide; Assigned to Arm(s): 3 | Intervention Type: DRUG; Name: Formoterol Fumarate; Assigned to Arm(s): 4 | Intervention Type: DRUG; Name: Placebo; Assigned to Arm(s): 5
C: Arm Label: olodaterol (BI 1744) low and placebo; Type: EXPERIMENTAL; Interventions: Drug: olodaterol (BI 1744) low, Drug: Placebo, Device: Respimat | Arm Label: olodaterol (BI 1744) low and low tio; Type: EXPERIMENTAL; Interventions: Drug: olodaterol (BI 1744) low, Drug: low tiotropium bromide, Device: Respimat | Arm Label: olodaterol (BI 1744) low and medium tio; Type: EXPERIMENTAL; Interventions: Drug: olodaterol (BI 1744) low, Drug: medium tiotropium bromide, Device: Respimat | Arm Label: olodaterol (BI 1744) low and high tio; Type: EXPERIMENTAL; Interventions: Drug: olodaterol (BI 1744) low, Drug: high tiotropium bromide, Device: Respimat | Arm Label: olodaterol (BI 1744) high and placebo; Type: EXPERIMENTAL; Interventions: Drug: olodaterol (BI 1744) high, Drug: Placebo, Device: Respimat | Arm Label: Olodaterol (BI 1744) high and low tio; Type: EXPERIMENTAL; Interventions: Drug: low tiotropium bromide, Drug: olodaterol (BI 1744) high, Device: Respimat | Arm Label: Olodaterol (BI 1744) high and medium tio; Type: EXPERIMENTAL; Interventions: Drug: olodaterol (BI 1744) high, Drug: medium tiotropium bromide, Device: Respimat | Arm Label: Olodaterol (BI 1744) high and high tio; Type: EXPERIMENTAL; Interventions: Drug: olodaterol (BI 1744) high, Drug: high tiotropium bromide, Device: Respimat | Intervention Type: DRUG; Name: olodaterol (BI 1744) low; Assigned to Arm(s): olodaterol (BI 1744) low and high tio, olodaterol (BI 1744) low and low tio, olodaterol (BI 1744) low and medium tio, olodaterol (BI 1744) low and placebo | Intervention Type: DRUG; Name: low tiotropium bromide; Assigned to Arm(s): Olodaterol (BI 1744) high and low tio, olodaterol (BI 1744) low and low tio | Intervention Type: DRUG; Name: olodaterol (BI 1744) high; Assigned to Arm(s): Olodaterol (BI 1744) high and high tio, Olodaterol (BI 1744) high and low tio, Olodaterol (BI 1744) high and medium tio, olodaterol (BI 1744) high and placebo | Intervention Type: DRUG; Name: medium tiotropium bromide; Assigned to Arm(s): Olodaterol (BI 1744) high and medium tio, olodaterol (BI 1744) low and medium tio | Intervention Type: DRUG; Name: high tiotropium bromide; Assigned to Arm(s): Olodaterol (BI 1744) high and high tio, olodaterol (BI 1744) low and high tio | Intervention Type: DRUG; Name: Placebo; Assigned to Arm(s): olodaterol (BI 1744) high and placebo, olodaterol (BI 1744) low and placebo | Intervention Type: DEVICE; Name: Respimat; Assigned to Arm(s): Olodaterol (BI 1744) high and high tio, Olodaterol (BI 1744) high and low tio, Olodaterol (BI 1744) high and medium tio, olodaterol (BI 1744) high and placebo, olodaterol (BI 1744) low and high tio, olodaterol (BI 1744) low and low tio, olodaterol (BI 1744) low and medium tio, olodaterol (BI 1744) low and placebo
D: Arm Label: tiotropium + olodaterol; Type: EXPERIMENTAL; Interventions: Drug: tiotropium, Drug: olodaterol | Arm Label: tiotropium; Type: ACTIVE_COMPARATOR; Interventions: Drug: tiotropium | Intervention Type: DRUG; Name: tiotropium; Assigned to Arm(s): tiotropium + olodaterol | Intervention Type: DRUG; Name: olodaterol; Assigned to Arm(s): tiotropium + olodaterol | Intervention Type: DRUG; Name: tiotropium; Assigned to Arm(s): tiotropium

Answer: A