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: Unknown
Which test can detect facial nerve palsy occurring due to lesion at the outlet of stylomastoid? 
Select and explain. 
A. Detion 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. Detion of tongue towards opposite side
A: Detion of angle of mouth towards opposite side
Answer: A: Detion of angle of mouth towards opposite side 
Explanation: Lesion occuring at the outlet of stylomastoid foramen means LMN palsy, so face sags and is drawn across to opposite side. Chorda tympani nerve is spared at this level hence taste sensation over anterior 2/3 of tongue preserved