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': 'Aplastic crisis in sickle cell anemia as compared to haemolytic crisis leads to \nSelect and explain. \nA. Increased blood volume, B. Total leucocyte count decreased, C. Decrease in reticulocytes, D. Same findings', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Aplastic crisis is an acute event caused by sudden decrease in red cell production. This is usually triggered by infection of erythroblasts by parvovirus B-19.\nHemolytic crisis is\xa0associated with hyperbilirubinemia and compensatory reticulocytosis.', 'role': 'assistant'}]