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
The additional amount of oxygen transpoed in 100 ml of blood in a subject breathing 100% oxygen under hyperbaric conditions of 4 ATA compared to normobaric conditions (lATA) will be: 
Select and explain. 
A. 9 ml, B. 6 ml, C. 3 ml, D. 0.3 nil
B: 6 ml
Answer: B: 6 ml 
Explanation: B i.e. 6 ml