Please select the eligibility criteria that correspond to the clinical trial below.
Title: Diabetes Control and Complications Trial (DCCT)
Brief Summary: Background. Long-term microvascular and neurologic complications cause major morbidity and mortality in patients with insulin-dependent diabetes mellitus (IDDM). We examined whether intensive treatment with the goal of maintaining blood glucose concentrations close to the normal range could decrease the frequency and severity of these complications.

Methods. A total of 1441 patients with IDDM -- 726 with no retinopathy at base line (the primary-prevention cohort) and 715 with mild retinopathy (the secondary-intervention cohort) were randomly assigned to intensive therapy administered either with an external insulin pump or by three or more daily insulin injections and guided by frequent blood glucose monitoring or to conventional therapy with one or two daily insulin injections. The patients were followed for a mean of 6.5 years, and the appearance and progression of retinopathy and other complications were assessed regularly.


Options:
A: Eligibility Criteria:

* The major criteria for eligibility included insulin dependence, as evidenced by deficient C-peptide secretion; an age of 13 to 39 years; and the absence of hypertension, hypercholesterolemia, and severe diabetic complications or medical conditions. To be eligible for the primary-prevention cohort, patients were required to have had insulin dependent diabetes mellitus (IDDM) for one to five years, to have no retinopathy as detected by seven-field stereoscopic fundus photography, and to have urinary albumin excretion of less than 40 mg per 24 hours. To be eligible for the secondary-intervention cohort, the patients were required to have IDDM for 1 to 15 years, to have very-mild to moderate nonproliferative retinopathy, and to have urinary albumin excretion of less than 200 mg per 24 hours.
B: Inclusion criteria:

1. Patients \>=18 years with type 2 diabetes
2. HbA1c of \>= 7.0% (53 mmol/mol) and =\< 10% (86 mmol/mol)
3. Mean seated systolic blood pressure 130-159 mmHg and diastolic blood pressure 80-99 mmHg

Exclusion criteria:

1. Uncontrolled hyperglycaemia with a glucose level \>240 mg/dl (\>13.3 mmol/L) after an overnight fast before randomization
2. Known or suspected secondary hypertension
3. Acute coronary syndrome (non-STEMI, STEMI and unstable angina pectoris), stroke or transient ischemic attack within 3 months prior to informed consent
C: Inclusion Criteria:

* Diagnosed with type 2 diabetes mellitus, as determined by the new American Diabetes Association guidelines, which include a fasting plasma glucose level greater than 126 mg/dl (7.0 mmol/l), or a 2-hour postload value in the oral glucose tolerance test of greater than 200 mg/dl, with confirmation by a retest
* For participants aged 40 years or older, history of CVD (heart attack, stroke, history of coronary revascularization, history of peripheral or carotid revascularization, or demonstrated angina)
* For participants aged 55 years or older, a history of CVD is not required, but participant must be considered to be at high risk for experiencing a CVD event due to existing CVD, subclinical disease, or 2+ CVD risk factors
* HbA1c 7.5%-9% (if on more drugs) or 7.5%-11% (if on fewer drugs)
D: Inclusion Criteria: - Men and women with type 2 diabetes mellitus - Age above or equal to 50 years at screening and clinical evidence of cardiovascular disease or age above or equal to 60 years at screening and subclinical evidence of cardiovascular disease - Anti-diabetic drug naïve, or treated with one or two oral antidiabetic drug (OADs), or treated with human Neutral Protamin Hagedorn (NPH) insulin or long-acting insulin analogue or pre-mixed insulin, both types of insulin either alone or in combination with one or two OADs - HbA1c above or equal to 7.0% at screening Exclusion Criteria: - Type 1 diabetes mellitus - Use of glucagon-like peptide-1 (GLP-1) receptor agonist (exenatide, liraglutide, or other) or pramlintide within 90 days prior to screening - Use of any dipeptidyl peptidase 4 (DPP-IV) inhibitor within 30 days prior to screening - Treatment with insulin other than basal and pre-mixed insulin within 90 days prior to screening - except for short-term use in connection with intercurrent illness - Acute decompensation of glycaemic control requiring immediate intensification of treatment to prevent acute complications of diabetes (eg diabetes ketoacidosis) within 90 days prior to screening - History of chronic pancreatitis or idiopathic acute pancreatitis - Acute coronary or cerebro-vascular event within 90 days prior to randomisation - Currently planned coronary, carotid or peripheral artery revascularisation - Chronic heart failure New York Heart Association (NYHA) class IV - Personal or family history of multiple endocrine neoplasia type 2 (MEN2) or familial medullary thyroid carcinoma - Personal history of non-familial medullary thyroid carcinoma - Screening calcitonin above or equal to 50 ng/L

Answer: A