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
If both husband and wife are suffering with Achondroplasia, what are their chances of having a normal child? 
Select and explain. 
A. 0%, B. 25%, C. 50%, D. 100%
B: 25%
Answer: B: 25% 
Explanation: . 25%