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: Pathology
[{'content': 'Cold agglutinins are seen in - \nSelect and explain. \nA. Influenza, B. PAN, C. Multiple myeloma, D. SLE', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer- A. InfluenzaThis form of hemolytic anemia is caused by cold agglutinin IgM antibodies.Both intravascular and extravascular hemolysis may occur.Causes of cold agglutinin immunohemolytic anemia :- Mycoplasma infection, IMN, CMV, Influenm, HIV, Malignant lymphoma.', 'role': 'assistant'}]