This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Airway, Subject name: Anaesthesia
Appropiate size of PLMA for a 70 kg adult male patient is: 
Select and explain. 
A. 3, B. 4, C. 5, D. 6
C: 5
Answer: C: 5 
Explanation: Patient weight in Kg LMA Size Maximum cuff volume in ml <5 1 4 5-10 1.5 7 10-20 2 10 20-30 2.5 14 30-50 3 20 50-70 4 30 70-100 5 40 >100 6 50 Size of LMA is decided according to body weight.