Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Twenty Six-week, Randomized, Double-blind, Parallel Group, Multicenter, Active Controlled, Dose Titration Study to Evaluate the Efficacy and Safety of Aliskiren Compared to HCTZ With the Optional Addition of Amlodipine, Followed by a Second Twenty Six Weeks of Blinded Treatment, in Patients With Essential Hypertension
Brief Summary: This study is designed to compare the long-term efficacy and safety of an aliskiren based regimen to an HCTZ based treatment regimen with optional addition of amlodipine in patients with essential hypertension.


Options:
A: Inclusion Criteria:

-Patients with essential hypertension

Exclusion Criteria:

* Severe hypertension
* History or evidence of a secondary form of hypertension
* History of myocardial infarction. Other protocol-defined inclusion exclusion criteria also apply
B: Inclusion Criteria:

* Clinical diagnosis of hypertension, ischemic heart disease and congestive heart failure

Exclusion Criteria:

* Pregnancy
* Severe renal damage
* Severe liver damage
* Acute myocardial infarction
C: Inclusion Criteria:

1. A diagnosis of type 2 diabetes mellitus first made at age 30 years or older
2. Age 55 years or older at entry
3. Ability to provide informed consent
4. A substantially elevated risk of cardiovascular disease, indicated by:

   * A history of major macrovascular disease defined as any one of: stroke, myocardial infarction, hospital admission for transient ischaemic attack, hospital admission for unstable angina, coronary artery bypass graft, percutaneous transluminal coronary angioplasty (with or without stenting), peripheral revascularisation (angioplasty or surgery) or amputation secondary to vascular disease or
   * A history of major microvascular disease defined as any one of nephropathy (albumin:creatinine ratio \>300ug/mg), retinal photocoagulation therapy, proliferative retinopathy (new blood vessels on the disc or elsewhere, vitreous haemorrhage, pre-retinal haemorrhage, or fibrous proliferations on the disc or elsewhere), macular oedema (retinal thickening within one disc diameter of the macular centre) or blindness in either eye (corrected visual acuity 6/60 or worse, persisting for three months or more) not known to be due to non-diabetic causes or
   * A first diagnosis of type 2 diabetes made 10 or more years prior to entry or
   * Another major risk factor for vascular disease defined as any one of: current daily cigarette smoking, total cholesterol greater than 6.0 mmol/l (with or without cholesterol lowering treatment), HDL cholesterol \<1.0 mmol/l, microalbuminuria (albumin:creatinine ratio 30-300ug/mg) or
   * Age 65 years or over

Exclusion Criteria:

1. A definite contraindication to treatment with an ACE inhibitor or a thiazide-like diuretic
2. A specific indication for treatment with an ACE inhibitor other than perindopril 2-4 mg daily (see also section 5.2.3) or a thiazide-like diuretic
3. A definite and specific indication for treatment with gliclazide or a haemoglobin A1c control target of 6.5% or less
4. A definite contra-indication to treatment with gliclazide or a haemoglobin A1c control target of 6.5% or less
5. A definite indication for long-term full-dose or bed-time insulin therapy
6. Participation in a trial within the month prior to the Registration Visit or current participation in another trial

Other potential reasons for ineligibility include:

* High probability of non-adherence to study treatment or follow-up
* Current clinical instability (e.g. a major cerebral or coronary event or sight-threatening retinopathy or macular oedema within the previous few weeks)
* Life threatening non-vascular disease other than diabetes and its complications
* Moderate or severe dementia
* Major disability that is likely to prevent regular attendance at study clinics

Final decisions about eligibility were made at the discretion of the study investigator and the potential study participant, in the light of any requirements or guidance from local ethics committees and other regulatory bodies.
D: Inclusion Criteria:

* individuals with 30 to 70 years of age with pre-hypertension

Exclusion Criteria:

* low life expectancy
* other indications for the use of diuretics, such as cardiovascular disease
* intolerance to the study drugs
* pregnancy

Answer: A