What is the impact of BPG on hemoglobin's oxygen release to tissues?

• A. BPG decreases hemoglobin's affinity for oxygen, enhancing oxygen release to tissues.
• B. BPG increases hemoglobin's affinity for oxygen, enhancing oxygen release to tissues.
• C. BPG increases hemoglobin's affinity for oxygen, reducing oxygen release to tissues.
• D. BPG has no effect on hemoglobin's oxygen release to tissues.

Answer: (A)