This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2019, Subject name: Pathology
Which of the following is a feature of Vit B12 deficiency anemia? 
Select and explain. 
A. Hypersegmented neutrophils, B. Macro-ovalocytes, C. Megaloblastic anemia, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Clinical manifestations of Vitamin B12 deficiency: Haematological: Macro-ovalocytes, Hypersegmentation of neutrophils. Neurological: Demyelination in peripheral nerves and spinal cord B12 deficiency leads to megaloblastic anemia due to folate trap The peripheral smear given below shows hypersegmented neutrophil and macro-ovalocytes