A feature of fetal RBC in adult –: (A) Alkali denaturation resistant, (B) Small in size, (C) Has more 2,3 DPG level, (D) More iron than adult RBC
Answer is A. Features of fetal RBCs

It contains less 2,3 DPG
It is alkali denaturation resistant
It is larger in size than adult RBC → Larger in volume
It contains less iron than adult RBC
Life span is less.