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
The differential diagnosis for pancytopenia with cellular bone marrow include the following except - 
Select and explain. 
A. Megaloblastic anemia, B. Myelodysplasia, C. Paroxysmal Nocturnal Hemoglobinuria, D. Congenital dyserythropoietic anemia
D: Congenital dyserythropoietic anemia
Answer: D: Congenital dyserythropoietic anemia 
Explanation: None