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
Normal intraabdominal pressure is ? 
Select and explain. 
A. 0 - 8mmHg, B. 10 - 15mmHg, C. 15 - 20mmHg, D. 20 - 26mmHg
A: 0 - 8mmHg
Answer: A: 0 - 8mmHg 
Explanation: Ans. is'a'i.e., 0 - 8 mmHgNormal intra-abdominal pressure is 0-6 mmHg.