Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Multicenter, Randomized, Double-Blind, Phase 3 Trial to Evaluate the Efficacy and Safety of Saxagliptin Added to Insulin Monotherapy or to Insulin in Combination With Metformin in Subjects With Type 2 Diabetes Who Have Inadequate Glycemic Control on Insulin Alone or on Insulin in Combination With Metformin
Brief Summary: The purpose of this study is to compare the effects of saxagliptin with those of placebo as add-on therapy to insulin and insulin with metformin in improving glycemic control at 24 and 52 weeks.


Options:
A: 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
B: Inclusion Criteria:

1. The subject is an outpatient.
2. The subject signs and dates a written, informed consent form and any required privacy authorization prior to the initiation of any study procedures.

Exclusion Criteria:

1. The subject has any serious cardiac disease, serious cerebrovascular disorder, or any serious pancreatic or hematological disease.
2. The subject is considered ineligible for the study for any other reason by the investigator or subinvestigator.
C: Inclusion Criteria:

* Type 2 diabetes mellitus
* Must have been taking a stable dose of basal or premixed insulin for 8 weeks or longer prior to screening
* If taking metformin, must have been taking the same daily dose for 8 weeks or longer prior to screening
* Insulin type should be intermediate- or long-acting (basal) or premixed (premixed formulation may include short- or rapid-acting insulin as 1 component).
* Inadequate glycemic control (A1C of 7.5% to 11.0%, inclusive)
* Body mass index of 45 kg/m² or lower
* Fasting C-peptide level of 0.8 ng/mL or higher

Exclusion Criteria:

* Symptoms of poorly controlled diabetes, including but not limited to marked polyuria and polydipsia with greater than 10% weight loss during the last 3 months prior to screening or other signs and symptoms
* History of diabetic ketoacidosis or hyperosmolar nonketotic coma
* Women of childbearing potential unable or unwilling to use acceptable birth control
* Women who are pregnant or breastfeeding
* Active liver disease
* Anemia
* Chronic or repeated intermittent corticosteroid treatment (participants receiving stable doses of replacement corticosteroid (except dexamethasone) therapy may be enrolled)
* Use of short- or rapid-acting insulin
* Significant cardiovascular history defined as: myocardial infarction, coronary angioplasty or bypass graft, valvular disease or repair, unstable angina pectoris, transient ischemic attack, or cerebrovascular accident
* Congestive heart failure
* Unstable or rapidly progressing renal disease
* History of alcohol or drug abuse within the previous year
* History of hemoglobinopathies
* Unstable major psychiatric disorders
* Immunocompromised status
D: Inclusion Criteria:

* Type 2 diabetes
* HbA1c ≥ 7%
* Age ≥ 18
* Insulin treatment with or without oral antidiabetic medication

Exclusion Criteria:

* Contraindication to sitagliptin
* Pregnant or breast feeding women
* Type 1 diabetes, gestational diabetes, or diabetes with secondary cause
* Chronic hepatitis B or C (except healthy carrier of HBV), liver disease (AST/ALT \> 3-fold the upper limit of normal)
* Renal failure (Cr \> 2.0)
* Cancer within 5 years
* Not appropriate for oral antidiabetic agent
* Medication which affect glycemic control
* Disease which affect efficacy and safety of drugs
* Other clinical trial within 30 days

Answer: C