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
Pancytopenia with cellular marrow is seen in all except - 
Select and explain. 
A. Megaloblastic anemia, B. Myelodysplasia, C. Paroxysmal Nocturnal hemoglobinuria, D. G6PD deficiency
D: G6PD deficiency
Answer: D: G6PD deficiency 
Explanation: None