This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc. (R.B.C), Subject name: Pathology
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: Ans. (d) Congenital dyserythropoietic anemia(Ref: Harrison 18th/pg Chapter 107)In Congenital dyserythropoietic anemia, anemia rather than pancytopenia is seen