This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Haematology, Subject name: Medicine
[{'content': "Waldenstrom's macroglobulinemia is characterized by all except \nSelect and explain. \nA. IgE sereting clone of plasma cells, B. Hyperviseosity symptoms, C. Hepatosplenomegaly, D. Lymphadenopathy", 'role': 'user'}, {'content': "Answer: A \nExplanation: Waldenstrom macroglobulinaemia is a low grade lymphoplasmacytoid lymphoma associated with an Ig M paraprotein, causing clinical featurws of hyperviscosity syndrome.Other features include anemia,splenomegaly & lymphadenopathy. Reference:Davidson's principles &practice of medicine 22nd edition pg no 1045.", 'role': 'assistant'}]