This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hematopoietic System, Subject name: Pediatrics
Feature of fetal RBC in adult - 
Select and explain. 
A. Alkali denaturation resistant, B. Small in size, C. Has more 2,3 DPG level, D. More iron than adult RBC.
A: Alkali denaturation resistant
Answer: A: Alkali denaturation resistant 
Explanation: Ans. is 'a' Alkali denaturation resistant Features of fetal RBCs.It contains less 2,3 DPG*It is alkali denaturation resistant*It is larger in size than adult RBC*It contains less iron than adult RBC*