Respiratory Failure Is Which of the Following

Multiple Choice

Respiratory failure is which of the following?
I.PaO₂ of 40-50 mmHg on room air and PaCO₂
II.A syndrome where the lungs are not able to adequately exchange O₂ and CO₂
III.A condition always linked to chronic respiratory diseases
IV.This is a terminal condition with the patient will not recover from

A) I, II, III and IV
B) I, II and IV
C) I and II
D) II and III