Why Is N₂O the Ideal Gas for Measuring the Extent

Multiple Choice

Why is N₂O the ideal gas for measuring the extent to which pulmonary blood contributes to the diffusion rate?

A) Blood can absorb N₂O at a greater rate than N₂O can diffuse across the alveolar capillary membrane.
B) If N₂O is inhaled, the pulmonary capillary blood reaches its maximum capacity for N₂O almost instantly.
C) If N₂O is inhaled, the pulmonary capillary blood reaches its maximum capacity for N₂O slowly.
D) Blood can absorb N₂O at a slower rate than N₂O can diffuse across the alveolar capillary membrane.