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: ENT
[{'content': 'A patient presents with hyperacusis, loss of lacrimation and loss of taste sensation in the anterior 2/3rd of the tongue. Oedema extends up to which level of facial nerve - \nSelect and explain. \nA. Vertical part, B. Vertical part proximal to nerve to stapedius, C. Vertical part and beyond nerve to stapedius, D. Proximal to geniculate ganglion', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The patient is presenting with : -\n\n\nHyperacusis: - Nerve to stapedius is involved.\nLoss of taste sensation in anterior 2/3 of tongue → Chorda tympani is involved.\nLoss of lacrimation → Greater superficial petrosal nerve is involved.\n\n\nThus, the lesion is at or proximal to geniculate ganglion.', 'role': 'assistant'}]