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': 'Iron deficiency causes- \nSelect and explain. \nA. Megaloblastic anemia, B. Microcytic hypochromic anemia, C. Macrocytic hypochromic anemia, D. Microcytic hyperchromic anemia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: In Fe deficiency anemia the red cells become microcytic and hypochromic & poikilocytosis become more marked . Ref:Postgraduate Hematology by Victor Hoffbrand pg39 Ref Robbins 9/e pg422', 'role': 'assistant'}]