Specific Clinical Objectives of Oxygen (O₂) Therapy Include Which of the Following

Specific clinical objectives of oxygen (O₂) therapy include which of the following?
1) Decrease the symptoms caused by chronic hypoxemia.
2) Decrease the workload hypoxemia imposes on the heart and lungs.
3) Correct documented arterial hypoxemia.
4) Correct documented respiratory acidosis.

A) 2 and 4 only
B) 3 and 4 only
C) 1 and 3 only
D) 1, 2, and 3 only