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': 'All are true about Raynauds phenomena except? \nSelect and explain. \nA. Exposure to cold aggravates, B. Spasm of vessels, C. More common in females, D. Atherosclerosis of vessels', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Atherosclerosis of vessels", 'role': 'assistant'}]