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': 'The most impoant example of a compensated hemolytic anemia becomes decompensated, is when: \nSelect and explain. \nA. Infected with TB, B. Infected with parvovirus B19, C. Liver disease, D. Renal cell carcinoma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: A patient with a hemolytic condition may present without anemia (Compensated hemolytic anemia) It becomes decompensated in Pregnancy Folate deficiency Renal failure (Interfering with adequate EPO production). Also in Acute infections- which depresses erythropoiesis. The most dramatic example is parvovirus B19 infection, which may lead to aplastic crisis. Ref: Harrison, E-18,P-873.', 'role': 'assistant'}]