<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:Collagen is a very critical structural protein in many of our connective tissues. Defects in collagen produce diseases such as Ehlers-Danlos syndrome, where there is a defective lysyl hydroxylase gene, or osteogenesis imperfecta, where there is a defect in the production of type I collagen. Which of the following represents the basic repeating tripeptide of collagen?? A: Ser-X-Y, B: Met-X-Y, C: Gly-X-Y, D: Glu-X-Y, E: Asp-X-Y,  <response>: This is a question about the basic structure of collagen. Collagen is made up of repeating amino acid triplets, where the X and Y positions can be various amino acids, but the first position is always glycine. So the answer should be the choice with Gly-X-Y.C: Gly-X-Y 