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': 'True regarding anaemia of chronic ds. are A/E - \nSelect and explain. \nA. Decreased TIBC, B. Increased macrophage iron in marrow, C. Decrease serum ferritin level, D. Decreased serum iron levels', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]