Please assess the completion status of the following clinical trial:

Trial Title: A Study of the Safety and Efficacy of Glimepiride, Gliclazide, Repaglinide or Acarbose When Added to Sitagliptin + Metformin Combination Therapy in Chinese Participants With Diabetes (MK-0431-313)

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: PHASE4
- Number of Arms: 4.0

Eligibility Criteria:
Inclusion Criteria:~* Has Type 2 Diabetes Mellitus;~* Agrees to use an effective method of contraception or must not otherwise be at risk of becoming pregnant (female participants).~Exclusion Criteria:~* Has a history of type 1 diabetes mellitus or a history of ketoacidosis;~* Has been treated with insulin, a dipeptidyl peptidase 4 (DPP-4) inhibitor, a Glucagon-like peptide-1 (GLP-1) mimetic or analogue before;~* Is on a weight loss program (not in maintenance phase), has started a weight loss medication, or has undergone bariatric surgery within 12 months;~* Has undergone a surgical procedure within 4 weeks;~* Has had new or worsening signs or symptoms of coronary heart disease or congestive heart failure within past 3 months, or has acute coronary syndrome, coronary artery intervention, or stroke or transient ischemic neurological disorder;~* Has a medical history of active liver disease, including chronic active hepatitis B or C, primary biliary cirrhosis, or symptomatic gallbladder disease;~* Has poorly controlled hypertension;~* Has severe peripheral vascular disease;~* Has human immunodeficiency virus (HIV);~* Has had a clinically important hematological disorder;~* Routinely consumes \>2 alcoholic drinks per day or \>14 alcoholic drinks per week, or engages in binge drinking;~* Has a history of intolerance or hypersensitivity or any contraindication to study medications (including sitagliptin, metformin, glimepiride, repaglinide, acarbose or gliclazide) based upon the Chinese label;~* Is on or likely to require treatment with ≥2 consecutive weeks or repeated courses of pharmacologic doses of corticosteroids (other than inhaled, nasal, or topical corticosteroids);~* Is pregnant or breast feeding or is expecting to conceive or donate eggs during the study, including 14 days following the last dose of study drug (female participants).

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 75 Years
- Healthy Volunteers: f

Study Arms:
- Metformin + Sitagliptin + Glimepiride (Type: ACTIVE_COMPARATOR): During Phase 2, participants receive up to 6 mg glimepiride daily as an add-on to metformin + sitagliptin combination therapy for 24 weeks (Week 20 through Week 44).
- Metformin + Sitagliptin + Repaglinide (Type: EXPERIMENTAL): During Phase 2, participants receive up to 16 mg repaglinide daily as an add-on to metformin + sitagliptin combination therapy for 24 weeks (Week 20 through Week 44).
- Metformin + Sitagliptin + Acarbose (Type: EXPERIMENTAL): During Phase 2, participants receive 50-100 mg acarbose three times daily as an add-on to metformin + sitagliptin combination therapy for 24 weeks (Week 20 through Week 44).
- Metformin + Sitagliptin + Gliclazide (Type: EXPERIMENTAL): During Phase 2, participants receive 30-120 mg gliclazide daily as an add-on to metformin + sitagliptin combination therapy for 24 weeks (Week 20 through Week 44).

Based on this trial design, predict the completion outcome and termination type (if applicable).

Answer: outcome: complete