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': 'Which of the following statements about paroxysmal cold hemoglobinuria is NOT true - \nSelect and explain. \nA. Chronic autoimmune form responds well to splenectomy, B. Results from formation of Donath-Landsteiner antibody, C. Attacks are associated with hemoglobinuria, D. Can occur secondary to syphilis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]