Please select the eligibility criteria that correspond to the clinical trial below.
Title: Comparison of Billroth-I and Roux-en-Y Reconstruction After Distal Subtotal Gastrectomy for Gastric Cancer Patients : Prospective Randomized Study
Brief Summary: The purpose of this trial is to compare the degree of reflux, operative outcomes and quality of life between Roux en Y and Billroth-I reconstructions after distal subtotal gastrectomy for gastric cancer


Options:
A: Inclusion Criteria:

* Endoscopy and biopsy confirmed gastric antrum or angle (from the cardia more than 4cm) of gastric cancer
* tumor stage: I
* There is no experience with chemotherapy, no distant metastasis
* Have their own ability to answer the questionnaire
* There is no mental illness
* Age between 18-70 years old
* Agreed to participate in the experiment and signed informed consent

Exclusion Criteria:

* pregnant or nursing patients
* The combined more serious cardiovascular disease, liver and kidney dysfunction (glutamic-pyruvic transaminase/glutamic oxalacetic transaminase more than three times the upper limit of normal, serum creatinine more than 50% higher than the upper limit of normal), abnormal blood clotting function (mean prothrombin time, activated partial thromboplastin time higher than normal values above the upper limit of 50%), neuropsychiatric disorders
* Patients with active infection
* Have other malignant tumor
* Some reason withdraw subjects, can not enrolled in the study again
B: Inclusion Criteria:

* Patients diagnosed with adenocarcinoma at the endoscopic biopsy
* Patients who are possible to be performed curative resection in imaging study
* Patients with tumor which not involved in pylorus and are located in mid or distal portion of the stomach
* Patients with informed consent
* Patients with three or less American Society Anesthesiology Score 3

Exclusion Criteria:

* Patients who are or become pregnant
* Patients with uncontrolled disease
* Patient s with synchronous other malignancy
* Patients participated in other clinical trial
C: Inclusion Criteria:

* 18\<age\<75
* Gastric lesions were diagnosed as gastric adenocarcinoma by endoscopic biopsy
* The preoperative clinical stage is T1-4a,N0-3,M0(According to AJCC- 7th TNM tumor stage)
* It is expected that the results of R0 surgery can be obtained by performing distal gastrectomy and D2 lymph node dissection
* Preoperative ECOG performance status score 0/1
* Nutrition risk screening（NRS2002）
* Preoperative ASA score I-III
* Patient informed consent

Exclusion Criteria:

* Pregnancy or breastfeeding women
* Severe mental illness
* History of upper abdominal surgery
* History of gastric surgery (including ESD/EMR for gastric cancer)
* 3 years of history of other malignant diseases；
* Gastric cancer patients who have undergone neoadjuvant treatment or recommend neoadjuvant treatment
* A history of unstable angina or myocardial infarction within 6 months
* History of cerebral infarction or cerebral hemorrhage within 6 months
* There is a history of sustained systemic corticosteroid treatment within 1 month
* Needs simultaneous surgical treatment of other diseases；
* Gastric cancer complications (bleeding, perforation, obstruction) require emergency surgery
* Pulmonary function test FEV\<1 predicted value 50%
D: Inclusion Criteria:

* Histologically confirmed adenocarcinoma of stomach
* Performance status: Eastern Cooperative Oncology Group (ECOG) 0-1
* Tumor located in the antrum or the angle or the lower body of stomach
* Appropriate informed consent was obtained.

Exclusion Criteria:

* Patients with severe complications which were possible to prolong hospital stay
* Patients with history of other organ malignancies
* Patients who were diagnosed inadequacy for this study by a physician
* Patients without an informed consent

Answer: B