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
Not a cause of objective tinnitus ? 
Select and explain. 
A. Palatal myoclonus, B. Glomus tumor, C. Carotid aery aneurysm, D. Presbyacusis
D: Presbyacusis
Answer: D: Presbyacusis 
Explanation: Ans. is 'd' i.e., Presbyacusis Tinnitus Tinnitus is ringing sound or noise in the ear. The characteristic feature is that the origin of this sound is within the patient.