This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anaesthesia
Pulse oximeter is used for monitoring – 
Select and explain. 
A. Oxygen content of blood, B. Oxygen saturation, C. Partial pressure of oxygen, D. All of the above
B: Oxygen saturation
Answer: B: Oxygen saturation 
Explanation: None