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
Macrocytic anemia may be seen in all of these except- 
Select and explain. 
A. Liver disease, B. Copper deficiency, C. Thiamine deficiency, D. Vitamin B12 deficiency
B: Copper deficiency
Answer: B: Copper deficiency 
Explanation: Copper deficiency is manifested by hypochromic normocytic anemia, osteopenia, depigmentation, mental retardation and psychomotor abnormalities.
Thiamine, pyridoxine and Bl2 deficiency leads to megaloblastic anemia.
Classification of megaloblastic anemia