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: Medicine
[{'content': 'Gaisbock syndrome is known as \nSelect and explain. \nA. Primary Familial Polycythemia, B. High Altitude Erythrocytosis, C. Spurious Polycythemia, D. Polycythemia Vera', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Answer is C (Spurious Polycythemia) Gaisbock syndrome refers to Spurious Polycythemia or Relative Erythrocytosis due to decreased plasma volume.', 'role': 'assistant'}]