This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oesophagus, Subject name: Surgery
[{'content': 'Boerhaave syndrome is the spontaneous rupture of which part of esophagus \nSelect and explain. \nA. Lower esophagus, B. Upper esophagus, C. Middle esophagus, D. Stomach', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) Lower esophagusRef Bailey and Love 26th edition Page 992* Boerhaave syndrome is spontaneous rupture of Esophagus in lower end of Esophagus due to vomiting against tight glottis* Pleural effusion occurs rapidly and forms a collection in left side chest.', 'role': 'assistant'}]