<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 12-year-old boy is referred to a pediatric neurologist because of repetitive motions such as blinking or tilting his head. He is brought in by his mother who says that he also clears his throat and hums repeatedly. These actions have been happening for the past year and his mother is concerned. The boy was born at 39 weeks gestation via spontaneous vaginal delivery. He is up to date on all vaccinations and is meeting all developmental milestones. On physical exam, he shows no focal neurological deficits and is cognitively normal for his age. He occasionally sharply jerks his head to one side during the physical exam and utters obscene words. Which of the following is most associated with this condition?? A: 3 Hz spike-wave pattern on EEG, B: CAG repeat on the short arm of chromosome 4, C: Coprolalia, D: Severe atrophy of the caudate and putamen, E: X-linked MECP2 mutation with female predominance,  <response>: This is a clinical vignette describing a 12-year-old boy with repetitive involuntary movements and vocalizations. The key findings are repetitive blinking, head tilting, throat clearing, humming, and occasional coprolalia uttering obscene words. This presentation is most consistent with Tourette syndrome, a neurological disorder characterized by multiple motor and vocal tics. The EEG finding of a 3 Hz spike-wave pattern would be more indicative of absence epilepsy. The CAG trinucleotide repeat expansion on chromosome 4 is associated with Huntingtons disease, which causes chorea and cognitive decline, not tics. Severe atrophy of the caudate and putamen is also seen in Huntingtons disease. The X-linked MECP2 mutation causes Rett syndrome, a neurodevelopmental disorder primarily affecting females.Therefore, based on the clinical vignette, the feature most associated with this patients condition is coprolalia, which is suggestive of Tourette syndrome.C: Coprolalia 