A 35-year-old female presented to the medicine OPD with paresthesias and weakness of B/L lower limbs with a band like sensation of tightness around the torso along with painful loss of vision in both eyes along with diplopia and periorbital pain. There is a history of similar attacks in the past with period of normalcy in between O/E, Ataxia- present Papillitis (on fundus examination) Facial myokymia Bladder incontinence and constipation CSF studies revealed mononuclear cell pleocytosis along with increased IgG. Which of the following are the oral drugs approved for the above condition: - 1. Fingolimod 2. Natalizumab 3. Teriflunomide 4. Glatiramer acetate