This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': 'Trinucleotide repeat seen in Fragile X syndrome is \nSelect and explain. \nA. CGG, B. CTG, C. CAG, D. GAA', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Examples of Trinucleotide-Repeat DisordersDiseaseRepeatFragile X syndromeCGGFriedreich ataxiaGAAMyotonic dystrophyCTGSpinobulbar muscular atrophy(Kennedy disease)Huntington diseaseSpinocerebellar ataxiaCAGRef: Robbins and Cotran Pathologic Basis of Disease; 9th edition; Chapter 5; Genetic Disorders; Page no: 168', 'role': 'assistant'}]