A decrease in arterial PO2 is a typical feature of
A
Physiological shunt (Alveoli are perfused with blood but ventilation fail
B
Hypoventilation
C
Fibrosis of lungs
D
Moderate exercise
E
Carbon monoxide poisoning
Correct Answer: Physiological shunt (Alveoli are perfused with blood but ventilation fail, Hypoventilation, Fibrosis of lungs