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': 'Macrocytic anemia is seen in all EXCEPT - \nSelect and explain. \nA. Vitamin B12 deficiency, B. Hemolytic anemia, C. Post hemorrhagic anemia, D. Anemia of chronic disease', 'role': 'user'}, {'content': "Answer: C \nExplanation: Robbins basic pathology 8th edition, page no 423, Answer is option3, post hemorrhagic anemia Post Hemorrhagic anemia is normocytic and normochromic. With chronic blood loss, iron stores are gradually depleted. Iron is essential for hemoglobin synthesis and effective eeythropoiesis, and it's deficiency thus leads to chronic anemia of underproduction.", 'role': 'assistant'}]