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': 'The normal total iron binding capacity is- \nSelect and explain. \nA. 0.5-1 Omg/litre, B. 1.5-2.5 mg/litre, C. 1.0-1.5mg/litre, D. None', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. is None In normal individuals transferrin is about 33% saturated with iron, yielding serum iron levels that average 120 g/dl in men and 100 g/dl in women. Thus the total iron binding capacity of serum is in the range of 300 to 350 g/dl (30-35 mg/litre).', 'role': 'assistant'}]