This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thyroid Gland, Subject name: Surgery
[{'content': 'A 48-year-old woman underwent subtotal thyroidectomy. She has a vague family history of malignant hyperthermia. She develops agitateion, restlessness, fever, tremor, shivering and tachypnoea. Thyroto-xic crisis can be best distinguished from malignant hyperthermia by estimating: \nSelect and explain. \nA. Temperature variation, B. Increased CPK levels, C. LDH, D. Muscular rigidity', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans: b (Increased CPK levels)Ref: Harrison, 16thed, p. 105Malignant hyperthermia ppt by* Inhalation anaesthesia* Sch', 'role': 'assistant'}]