A 58-year-old woman presents to your office complaining of a severe headache that has been troubling her for the past week. Over the past 24 hours she has developed ringing in the right ear and severe...

A 58-year-old woman presents to your office complaining of a severe headache that has been troubling her for the past week. Over the past 24 hours she has developed ringing in the right ear and severe positional vertigo. Which structure might be involved?

A. Superior sagittal sinus

B. Inferior sagittal sinus

C. Transverse sinus

D. Cavernous sinus

E. Vein of Galen