Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Phase III Randomised, Double-blind, Placebo-controlled, Parallel Group Efficacy and Safety Study of Linagliptin (5 mg), Administered Orally Once Daily for at Least 52 Weeks in Type 2 Diabetic Patients in Combination With Basal Insulin Therapy
Brief Summary: The objective of the current study is to investigate the efficacy, safety and tolerability of linagliptin (5 mg / once daily) compared to Placebo during long term treatment (52 weeks and longer) in combination with basal insulin in patients with type 2 diabetes mellitus with insufficient glycaemic control.


Options:
A: 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)
B: Inclusion Criteria:

* Blood glucose criteria must be met
* On a stable dose of insulin as defined by the protocol
* Body mass inde (BMI) in the range 22-45

Exclusion Criteria:

* Type 1 diabetes
* Pregnancy or lactation
* Evidence of serious diabetic complications
* Evidence of serious cardiovascular complications
* Laboratory value abnormalities as defined by the protocol
* Other protocol defined exclusion criteria may apply
C: Inclusion criteria:

1. Diabetes type 2, detectable C-peptide, HbA1c 7-10%
2. Pretreatment with basal insulin +/- Metformin or/and +/- Pioglitazone 3 Age \> 18 years, BMI \<= 45 kg/m2

Exclusion criteria:

1. Uncontrolled hyperglycemia during Run-in
2. Myocardial infarction, stroke or TIA within 3 months prior to informed consent
3. Liver impairment; gastric surgery; medical history of cancer in last 5 years
4. Other antidiabetic drugs, antiobesity drugs, systemic steroids, other investigational drug before randomisation
5. Unsufficient birth control, pregnancy and nursing
D: Inclusion Criteria:

* Have Type II diabetes mellitus (non-insulin-dependent).
* Females must be post-menopausal (\> 12 months without a menstrual period), surgically sterile, or must be using oral contraceptive, Norplant, Depo-provera, an IUD, or a diaphragm with spermicide or condoms. Females of childbearing potential must use acceptable contraceptive measures for at least one month prior to screening and for 30 days after completing the study.
* Must have been on insulin therapy alone continuously for at least 8 weeks prior to screening (minimum dose of 30 units per day). Patients taking insulin in combination with a single oral antidiabetic agent may have their oral agent discontinued and their insulin dose optimized over an 8 week period prior to screening if they are considered good study candidates in all other respects.
* HbA1c \> 7.5% at Pre-screen or at Screen for subjects who discontinue their antidiabetic agent at pre-screening.
* Provide signed Informed Consent.

Exclusion Criteria:

* Females who are lactating, pregnant, or planning to become pregnant.
* Use of any drug called a thiazolidinedione within 6 months prior to screening, or more than one oral antidiabetic agent (including combinations of agents such as Glucovance) in combination with insulin in the 3 months prior to screening.
* Use of any investigational drug for blood glucose control within 3 months of screening regardless of the treatment regimen, or use of any other investigational agent within 30 days preceding study entry.
* Use of niacin (not including doses found in multivitamins) or oral corticosteroids within 3 months of screening.
* Patients with ongoing swelling due to fluid accumulation or history of such requiring treatment with a drug in the 12 months prior to screening.
* Patients with a documented history of significant hypersensitivity (e.g., difficulty swallowing, difficulty breathing, tachycardia or skin reaction) to the drugs called thiazolidinediones or similar drugs, or with prior fluid related intolerability to thiazolidinediones.
* Presence of clinically significant kidney or liver disease.
* Anemia.
* Presence of unstable or severe angina or coronary insufficiency.
* Patients with ongoing CHF (chronic heart failure) or history of CHF.
* Recent history or suspicion of current drug abuse or alcohol abuse.

Answer: C