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': 'All are impoant laboratory features of hereditary spherocytosis, EXCEPT: \nSelect and explain. \nA. Reduced MCHC, B. Normocytic anemia, C. Positive pink test, D. Normal WBC count', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Laboratory diagnosis of hereditary spherocytosis The anemia is usually normocytic. Increase in mean corpuscular hemoglobin concentration (MCHC)- (The only condition in which an increased MCHC is seen.) The diagnosis is on the basis of red cell morphology and osmotic fragility, a modified version called the pink test. Ref: Harrison, E-18, P-875.', 'role': 'assistant'}]