Which of the Following Are the Main Features That Allow

Which of the following are the main features that allow adaptation at the physiological level to high altitudes in Bar-Headed Geese?

A) They have enhanced lung diffusion, hemoglobin with a greater oxygen affinity, and greater diffusion of oxygen into the mitochondria.
B) They have lack of metabolic suppression, hemoglobin with a greater oxygen affinity, and greater diffusion of oxygen into the mitochondria.
C) They have a lack of metabolic suppression, enhanced lung diffusion, hemoglobin with a greater oxygen affinity, and greater diffusion of oxygen into the mitochondria.
D) They have a lack of metabolic suppression, enhanced lung diffusion, and hemoglobin with a greater oxygen affinity.