Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Phase IIIB, 12-Month, Double-blind, Double-dummy,Randomised, Parallel-group, Multicentre Exacerbation Study of SYMBICORT® pMDI 160/4.5 μg x 2 Actuations Twice-daily and 80/4.5 μg x 2 Actuations Twice-daily Compared to Formoterol Turbuhaler® 4.5 μg x 2 Inhalations Twice-daily in COPD Subjects
Brief Summary: The purpose of this study is to determine if SYMBICORT® delivered via a pressurized metered-dose inhaler, referred to as a pMDI, is effective in preventing COPD exacerbations.


Options:
A: Inclusion criteria:

* COPD patients with \> 10 pack years.
* Written informed consent.
* Able to complete a diary card.
* At least one of the following symptoms: chronic cough, chronic sputum production, frequent exacerbations, or dyspnoea at exertion.
* Postbronchodilator FEV1 below 90% confidence interval of predicted and postbronchodilator FEV1/FVC below 90% confidence interval of predicted.

Exclusion criteria:

* No oral corticosteroids 3 months prior to the study or maintenance treatment with corticostroids 6 months prior to the study.
* No history of asthma, lung diseases other than COPD, other diseases likely to interfere with the study.
B: Inclusion Criteria:

* A clinical diagnosis of COPD with symptoms for more than 2 years
* Smoking history of 10 or more pack years
* A history of at least one COPD exacerbation requiring a course of oral steroids and/or antibiotics within 1-12 months before first visit.

Exclusion Criteria:

* A history of asthma
* Patients taking oral steroids.
* Any significant disease or disorder that may jeopardize the safety of the patient
C: Inclusion Criteria:

* Smoker or ex smoker of at least 10 pack years
* Age 40 or above
* Prior and current use of inhaled corticosteroids for at least 6 months duration (Used for at least 75% of time on direct questioning)
* FEV1 \<80% of predicted, FEV1/FVC ratio \<70%.
* Less than 15% change and \<200 mls change in FEV1 20 minutes after 5 mg nebulised salbutamol.
* 256 patients to be included in trial of which 196 must have had a precious exacerbation of COPD in the last year

Exclusion Criteria:

* Clear history of asthma, bronchiectasis, carcinoma of bronchus or other significant respiratory disease
* Inability to give informed consent (severe mental illness, mental handicap or brain damage).
* Recorded exacerbation within last month that has required antibiotics or steroids (delayed randomisation)
* Classification as a never smoker
* Strongly positive skin allergy result (\>10mm skin weal greater then negative control) to house dust mite, grass, tree, aspergillus, cat, dog or weed (irrespective of asthma/atopy status)
D: Inclusion Criteria:

* A current clinical diagnosis of COPD with COPD symptoms for more than 2 years
* Current smoker or smoking history of 10 or more pack years (1 pack year = 20 cigarettes smoked per day for one year)
* A history of at least 1 COPD exacerbations requiring a course of steroids and/or antibiotics within 1-12 months before the first visit

Exclusion Criteria:

* A history of asthma at or after 18 years of age
* A history of allergic rhinitis at or after 18 years of age
* Subjects taking oral steroids
* Any significant disease or disorder that may jeopardize a subject's safety

Answer: D