This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Which is the BEST method to diagnose a case of Mallory weiss tear? 
Select and explain. 
A. Esophagogastroduodenoscopy, B. Side view endoscopy, C. MRI scan, D. Angiogram
A: Esophagogastroduodenoscopy
Answer: A: Esophagogastroduodenoscopy 
Explanation: Mallory-Weiss Tear A Mallory-Weiss tear is a linear mucosal rent near or across the gastroesophageal junction. It may disrupts the submucosal aeriole resulting in brisk hemorrhage. MUST KNOW: Endoscopy is the best method of diagnosis. Actively bleeding tear can be treated endoscopically with epinephrine injection, coaptive coagulation, band ligation, or hemoclips. Ref: Harrison, Edition-18, Page-2416.