This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cystic fibrosis & Sleep apnea, Subject name: Medicine
All of the following criteria are used for diagnosis of obesity hypoventilation syndrome except 
Select and explain. 
A. Hypeension, B. Sleep disorder breathing, C. BMI >= 30 Kg/ m2, D. PaCO2>= 45mmhg
A: Hypeension
Answer: A: Hypeension 
Explanation: CRITERIA for Obesity Hypoventilation syndrome - BMI >30 PCO2 > 45 mmHg Sleep disordered breathing