The oxygen dissociation curve of high-altitude deer mice hemoglobin is shifted to the left as compared to low-altitude deer mice hemoglobin. In this context, identify which of the following statements is incorrect.

• A. High-altitude deer mice hemoglobin has a higher oxygen-binding affinity.
• B. The P50 of low-altitude deer mice is lower.
• C. The high-altitude deer mice hemoglobin becomes saturated with oxygen at a lower partial pressure of oxygen (P_O2).
• D. Variations in globin genes appear to be the cause of increased oxygen-affinity of hemoglobin in high-altitude deer mice.

Answer: (B)