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
Macrocytic anemia not seen in? 
Select and explain. 
A. Folate deficiency, B. Anemia of chronic disease, C. Previous ileum resection, D. Regional enteritis
B: Anemia of chronic disease
Answer: B: Anemia of chronic disease 
Explanation: Microcytosis is seen in folate deficiency And all GIT diseases , due to inhibition of folate mechanism - nuclear maturation lags behind that of cytoplasm Reference test book of Pathology 7th edition author Harsha Mohan page number 280- 283