<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 19-year-old woman, accompanied by her parents, presents after a one-week history of abnormal behavior, delusions, and unusual aggression. She denies fever, seizures or illicit drug use. Family history is negative for psychiatric illnesses. She was started on risperidone and sent home with her parents. Three days later, she is brought to the emergency department with fever and confusion. She is not verbally responsive. At the hospital, her temperature is 39.8C 103.6F, the blood pressure is 10060 mm Hg, the pulse rate is 102min, and the respiratory rate is 16min. She is extremely diaphoretic and appears stiff. She has spontaneous eye-opening but she is not verbally responsive and she is not following commands. Laboratory studies show:Sodium 142 mmolLPotassium 5.0 mmolLCreatinine 1.8 mgdlCalcium 10.4 mgdlCreatine kinase 9800 ULWhite blood cells 14,500mm3Hemoglobin 12.9 gdlPlatelets 175,000mm3Urinalysis shows protein 1, hemoglobin 3 with occasional leukocytes and no red blood casts. What is the best first step in the management of this condition?? A: Dantrolene, B: Intravenous hydration, C: Paracetamol, D: Stop risperidone, E: Switch risperidone to clozapine,  <response>: This is a clinical vignette describing a 19-year-old woman who recently started risperidone for abnormal behavior and delusions. She now presents with fever, confusion, stiffness, and altered mental status concerning for neuroleptic malignant syndrome NMS. The lab findings of elevated creatine kinase support the diagnosis of NMS. The best initial step in management is to immediately discontinue the offending agent, risperidone. Intravenous hydration and dantrolene can help treat the hyperthermia and rigidity but the first step is to stop the causative antipsychotic medication. Paracetamol and switching antipsychotics are not appropriate initial steps.D: Stop risperidone 