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: Medicine
MCV  > 100 fl  in all the following except 
Select and explain. 
A. Alcohol liver disease, B. Folate deficiency, C. Reticulocytosis, D. Lead poisoning
D: Lead poisoning
Answer: D: Lead poisoning 
Explanation: Lead poisoning  - microcytic (MCV < 80 fl).