question: Q:A 35-year-old woman comes to the physician because of two 12-hour episodes of dizziness over the past 3 months. During episodes, she experiences the acute onset of rotatory vertigo and imbalance, decreased hearing, tinnitus, a sense of fullness of the right ear, and vomiting. Examination shows a mild hearing loss of the right ear. Which of the following is the most likely diagnosis?? 
  A:Acoustic neuroma;B:Benign positional vertigo;C:Brain stem transient ischemic attacks;D:Meniere's disease