This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urology, Subject name: Surgery
[{'content': "Mackler's triad includes all except \nSelect and explain. \nA. Vomiting, B. Subcutaneous emphysema, C. Lower thoracic pain, D. Peripheral cyanosis", 'role': 'user'}, {'content': "Answer: D \nExplanation: Mackler's triad is seen in Boerhaave's syndrome. It consists of Vomiting, Chest pain and Subcutaneous emphysema. Reference : page 802 SRB's manual of surgery 5th edition", 'role': 'assistant'}]