This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Physiology
[{'content': 'Brain temperature is most accurately measured through \nSelect and explain. \nA. Tympanic membrane, B. Nasopharynx, C. Scalp, D. Cornea', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Core temperature can be estimated bymeasuring the temperature of the lower esophagus, pulmonary aery, nasopharynx, or tympanum . Brain temperature is usually considered a "central" temperature, and in the absence of intracranial pathology, it can be estimated by measuring tympanic or esophageal temperatures Ref ganong\'s review of medical physiology 25e', 'role': 'assistant'}]