This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Medicine
[{'content': 'The blood indices which reflects iron deficiency more accurately is \nSelect and explain. \nA. MCV, B. MCH, C. MCHC, D. PCV', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Mean cell hemoglobin concentration = (hemoglobin x 10)/hematocrit or MCH/MCVNormal value is 33 +/- 2%Ref: Harrison; 19th edition; Page no: 394', 'role': 'assistant'}]