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: Surgery
[{'content': 'A 65 year old patient comes with dysphagia, regurgitation and halitosis. On barium swallow it shows diverticula at upper oesophagus. Which of the following is false about this condition \nSelect and explain. \nA. It is more common in women, B. It arises from killian’s triangle, C. It usually deviates from the midline mostly to the left, D. Treatment is myotomy of cricopharyngeus muscle and excision of the sac', 'role': 'user'}, {'content': 'Answer: A \nExplanation: It is most common in men.', 'role': 'assistant'}]