This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': 'In achondroplasia mutation occurs in which of the following gene: \nSelect and explain. \nA. FGFR3, B. FGFR2., C. FGFR1., D. FGFR6.', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]