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
50 yr old smoker, obese , hypeension patient is having loud snoring . He has > 5 episodes of apnea per hour of sleep. What is the next best management for improvement of his symptom ? 
Select and explain. 
A. Uvulopalatoplasty, B. C.P.A.P, C. Weight reduction and diet control, D. Mandibular reposition surgery
B: C.P.A.P
Answer: B: C.P.A.P 
Explanation: C.P.A.P is the best management out of all . It has better outcomes in comparison to other techniques in terms of apneas ,hypoapneas , nocturnal oxygenation , symptoms and quality of life .