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
In achondroplasia mutation occurs in which of the following gene: 
Select and explain. 
A. FGFR3, B. FGFR2., C. FGFR1., D. FGFR6.
A: FGFR3
Answer: A: FGFR3 
Explanation: None