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 of the following responses is least affected by Anaesthesia – \nSelect and explain. \nA. Brainstem Auditory Evoked Response (BAER), B. Visual Evoked Response (VER), C. Somatosensory Evoked potential (SSEP), D. Electroencephalogram (EEG)', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]