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': 'Which test can detect facial nerve palsy occurring due to the lesion at the outlet of stylomastoid foramen - \nSelect and explain. \nA. Deviation of angle of mouth towards opposite side, B. Loss of taste sensation in anterior 2/3 of tongue, C. Loss of sensation over right cheek, D. Deviation of tongue towards opposite side', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Injury at stylomastoid foramen causes LMN palsy, so the face sags and drawn across to the opposite side.\nChorda tympani is spared at this level, taste sensation over anterior 2/3 of tongue is preserved.', 'role': 'assistant'}]