78Fetal Hemoglobin Has a Higher Affinity for O₂ Than Adult

Multiple Choice

78Fetal hemoglobin has a higher affinity for O₂ than adult hemoglobin. This is due to

A) increased number of salt bridges between alpha and beta chains.
B) increased ability to bind to 2,3-bisphosphoglycerate (BPG) .
C) decreased ability to bind to BPG.
D) decreased affinity for CO₂.
E) increased Bohr effect.