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': 'The following are X-linked disorders except \nSelect and explain. \nA. Cystic fibrosis, B. Hemophilia A, C. Duchenne muscular dystrophy, D. Fragile X syndrome', 'role': 'user'}, {'content': 'Answer: A \nExplanation: X-linked Recessive Inheritance Hemophilia A Duchenne/Becker muscular dystrophy Fragile X syndrome Autosomal Recessive Inheritance Cystic fibrosis Phenylketonuria Tay-Sachs disease (Robbins Basic Pathology,9th edition,pg no. 219)', 'role': 'assistant'}]