This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anaesthesia, Subject name: Anaesthesia
The triad of general anaesthesia includes 
Select and explain. 
A. Unconsciousness, analgesia and muscle relaxation, B. Anxiolysis, analgesia and unconsciousness, C. Muscle relaxation, sedation and analgesia, D. Dissociation, analgesia and muscle relaxation
A: Unconsciousness, analgesia and muscle relaxation
Answer: A: Unconsciousness, analgesia and muscle relaxation 
Explanation: The triad of general anesthesia : Unconsciousness (narcosis) analgesia muscle relaxation The pentad of anesthesia: Loss of consciousness loss of reflex response amnesia muscle relaxation analgesia Ref: Miller's anesthesia 8th edition Ref: Morgan & Mikhail's clinical anesthesiology 6e