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
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 - 
Select and explain. 
A. Vertical part, B. Vertical part proximal to nerve to stapedius, C. Vertical part and beyond nerve to stapedius, D. Proximal to geniculate ganglion
D: Proximal to geniculate ganglion
Answer: D: Proximal to geniculate ganglion 
Explanation: The patient is presenting with : -


Hyperacusis: - Nerve to stapedius is involved.
Loss of taste sensation in anterior 2/3 of tongue → Chorda tympani is involved.
Loss of lacrimation → Greater superficial petrosal nerve is involved.


Thus, the lesion is at or proximal to geniculate ganglion.