Analyze the effect of increased CO2 diffusion from muscle tissues into red blood cells on hemoglobin's oxygen release.

• A. Increased CO2 diffusion enhances proton production, decreasing hemoglobin's oxygen affinity and promoting oxygen release.
• B. Increased CO2 diffusion enhances oxygen production, decreasing hemoglobin's oxygen affinity and promoting oxygen release.
• C. Increased CO2 diffusion reduces proton production, increasing hemoglobin's oxygen affinity and inhibiting oxygen release.
• D. Increased CO2 diffusion has no effect on hemoglobin's oxygen release.

Answer: (A)