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: Anaesthesia
[{'content': 'Which is false regarding halothane? \nSelect and explain. \nA. It is a pleasant smelling gas, B. Decreased vagal tone, C. Sensitises myocardium to catecholamines, D. It can cause postoperative hepatitis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Halothane has little analgesic propeies but | vagal tone resulting in bradycardia,vasodilatation and hypotension. The frequency of postoperative hepatitis is approximately 1 in 4000 for multiple exposures. Halothane sensitizes the hea to the arrhythmogenic effects of epinephrine , so that doses of epinephrine above 1.5 g/kg should be avoided. Ref: Morgan, Jr. G.E., Mikhail M.S., Murray M.J. (2006). Chapter 7. Inhalation Anesthetics. In G.E. Morgan, Jr., M.S. Mikhail, M.J. Murray (Eds), Clinical Anesthesiology, 4e.', 'role': 'assistant'}]