This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Which of the following agents is most commonly used to induce anaesthesia :– 
Select and explain. 
A. Thiopentone sodium, B. Methohexitone sodium, C. Propofol, D. Etomidate
A: Thiopentone sodium
Answer: A: Thiopentone sodium 
Explanation: None