This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anaesthesia
Supreme LMA characteristic is 
Select and explain. 
A. Has no bite block, B. Used in infants, C. High pressure, low volume, D. Has built in drain tube
D: Has built in drain tube
Answer: D: Has built in drain tube 
Explanation: LMA Supreme is one of the most advanced laryngeal mask airway (LMA)It has features of usual LMA with additional Built-in drain tube and a bite blockIt has high volume/ low-pressure cuff which generates higher seal pressureIt also provides a conduit for active suctioning of stomachIt can be used in infants as well as in adults.(Refer: Morgan and Mikhail's Clinical Anaesthesiology, 5th edition, pg no. 317, 318)