Based on the Accompanying Figure, Showing Fetal (A) and Adult

Multiple Choice

Based on the accompanying figure, showing fetal (A) and adult (B) oxygen-hemoglobin saturation curves, which of the following conclusions is TRUE?

A) The mother binds oxygen with greater affinity than the fetus.
B) Adult saturation occurs at lower partial pressures of oxygen than fetal saturation does.
C) At 50 percent saturation, fetal blood will have a higher affinity for oxygen than adult blood will.
D) As the partial pressure of oxygen increases, adult hemoglobin approaches saturation faster than fetal hemoglobin does.