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': 'Anemia of chronic disease is characterized by all,except - \nSelect and explain. \nA. Decreased serum iron, B. Increased total iron binding capacity (TIBC), C. Increased serum ferritin, D. Increased macrophage iron in bone marrow', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]