<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 55-year-old woman presents to the physician 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 episode, she feels as if she is suddenly thrown into a rolling spin. 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 physician 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?? A: Oral meclizine for 6 weeks and follow-up, B: Oral prednisolone for 2 weeks and follow-up, C: Canalith repositioning, D: Posterior canal occlusion, E: Singular neurectomy,  <response>: This question describes a patient with recurrent brief episodes of vertigo triggered by changes in head position, along with rotatory nystagmus, which are classic symptoms of benign paroxysmal positional vertigo BPPV. The lack of other neurological symptoms or findings makes BPPV the most likely diagnosis. Of the treatment options listed, canalith repositioning choice C is the first-line treatment for BPPV as it directly addresses the underlying cause - displaced otoconia in the semicircular canals - through repositioning maneuvers. Oral medications like meclizine or prednisolone choices A and B may help symptomatic relief but do not treat the underlying cause. Surgical interventions like posterior canal occlusion or singular neurectomy choices D and E are more invasive and reserved for refractory cases unresponsive to canalith repositioning.C: Canalith repositioning 