This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous General Anesthesia, Subject name: Anaesthesia
[{'content': 'Absolute contraindication to thiopentone: \nSelect and explain. \nA. Cardiotoxicity, B. Acute intermittent phorphyria, C. Malignant hyperthermia, D. Methhemoglobinemia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) Acute intermittent phorphyriaMust Know* Thiopentone is C/I in acute intermittent porphyria.* Etomidate is C/I in adrenal insufficiency.* LA which causes meth hemoglobinemia: Prilocaine* Malignant hyperthermia is caused by: Succinylcholine* DOC for malignant hyperthermia: Dantrolene', 'role': 'assistant'}]