This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Inhalational Anesthetic Agents, Subject name: Anaesthesia
The caffeine - halothane bath is used to diagnose with of the following condition- 
Select and explain. 
A. Malignant hypehermia, B. Neuroleptic malignant syndrome, C. Thyrotoxicosis, D. King denborough syndrome
A: Malignant hypehermia
Answer: A: Malignant hypehermia 
Explanation: The caffeine - halothane bath is used to diagnose Malignant hypehermia The caffeine halothanecontracture test (CHCT) is the criterion standard for establishing thediagnosisof malignant hypehermia (MH). The test is performed on freshly biopsied muscle tissue at 30 centers worldwide; one of these centers is located in Canada, and four are located in the United States.