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
High frequency audiometry uses frequency higher than the frequency region required to understand speech. It is used to monitor which of the following? 
Select and explain. 
A. Otosclerosis, B. Ototoxicity, C. Otospongiosis, D. Meniere's disease
B: Ototoxicity
Answer: B: Ototoxicity 
Explanation: High-frequency audiometry is specifically for ototoxicity monitoring, comprises air conduction thresholds from 10,000 to 20,000 Hz. Most ototoxic hearing losses will first occur in that frequency region, which is higher than the speech range.