Matthew Did Not Awaken When His Rather Noisy Roommate Came

Matthew did not awaken when his rather noisy roommate came back to their dorm room in the very early hours of the morning.It is most likely that Matthew's failure to hear the disturbance resulted from​ 

A) inner ear damage suffered as a result of attending too many loud heavy metal concerts. 
B) input from the reticular formation to the medial geniculate nucleus that adjusted his hearing to his state of consciousness. 
C) stimulation of his superior olivary nucleus that temporarily made his inner hair cells less sensitive. 
D) a temporary deficit in glutamate in his inner hair cells.

Correct Answer:

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