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: Physiology
Amount of dissolved oxygen transpoed in 100 ml of plasma in a subject breathing 100% oxygen at 4 ATA (Atmospheric pressure) will be: 
Select and explain. 
A. 9 ml, B. 6 ml, C. 3 ml, D. 0.3 ml
A: 9 ml
Answer: A: 9 ml 
Explanation: A i.e. 9 ml