This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Polycythemia, Subject name: Medicine
[{'content': 'Gaisbock syndrome is known as- \nSelect and explain. \nA. Primary familial polycytemia, B. High altitude Erythrocytosis, C. Spurious Polycythemia, D. Polycythemia vera', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Spurious Polycythemia o Gaisbock syndrome refers to spurious polycythemia or relative erythrocytosis due to decreased plasma volume.", 'role': 'assistant'}]