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': 'Antibody associated with cold antibody immunohemolytic anemia is: \nSelect and explain. \nA. IgA, B. IgE, C. IgG, D. IgM', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Cold antibody immunohemolytic anemia usually is caused by low-affinity IgM antibodies that bind to red cell membranes only at temperatures below 30°C,\xa0occurs in distal parts of the body (e.g., ears, hands, and toes) in cold weather.\n\xa0Warm antibody immunohemolytic anemia is caused by immunoglobulin G (IgG) or (rarely) IgA antibodies that are active at 37°C.', 'role': 'assistant'}]