This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Haematology, Subject name: Pathology
[{'content': 'Normal transferrin is saturated with iron \nSelect and explain. \nA. 20%, B. 35%, C. 50%, D. 70%', 'role': 'user'}, {'content': 'Answer: B \nExplanation: In normal individuals transferrin is about 1/3 rd saturated with iron , which is roughly near 35%. Ref :Robbins Pathologic basis of disease, pg :649', 'role': 'assistant'}]