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': '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: Ans. is 'c' i.e., Decreased serum ferritin level", 'role': 'assistant'}]