A 55-year-old woman presents to the provider with repeated episodes of dizziness for the last 3 months, which are triggered by rising from a supine position and by lying down. The episodes are sudden and usually last for less than 30 seconds. During the episodes, she feels as if the world is suddenly spinning around her. She has no symptoms in the period between episodes. The patient denies having headaches, vomiting, deafness, ear discharge, or ear pain. There is no history of a known medical disorder or prolonged consumption of a specific drug. The vital signs are within normal limits. On physical examination, when the provider asks the woman to turn her head 45° to the right, and then to rapidly move from the sitting to the supine position, self-limited rotatory nystagmus is observed following her return to the sitting position. The rest of the neurological examination is normal. Which of the following is the treatment of choice for the condition of this patient? Oral meclizine for 6 weeks and follow-up Oral prednisolone for 2 weeks and follow-up Canalith repositioning Posterior canal occlusion