<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:An 8-year old boy is brought into clinic for evaluation of possible scoliosis that was newly found on a routine exam at school. On exam, he is also noted to be in the 99th percentile for height and 70th percentile for weight. He appears to have abnormally long extremities as well as an upward lens dislocation on ophthalmologic exam. A mutation leading to a defect in which of the following proteins is the most likely cause of his condition?? A: Type I collagen, B: Type IV collagen, C: Elastin, D: Fibrillin, E: ATP7A,  <response>: This is a clinical vignette describing a pediatric patient with signs and symptoms suggestive of a genetic disorder affecting connective tissue. The key findings are scoliosis, tall stature, long extremities, and lens dislocation. This constellation of findings is most consistent with Marfan syndrome, which is caused by mutations in the fibrillin-1 FBN1 gene. Fibrillin-1 is an extracellular matrix glycoprotein that is a major component of microfibrils, which provide elasticity and strength to connective tissue. Therefore, the most likely answer is a defect in fibrillin production.D: Fibrillin 