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: Medicine
Autosomal recessive disease are: 
Select and explain. 
A. Tuberous sclerosis, B. Duchenne muscular dystrophy, C. Cystic fibrosis, D. All
C: Cystic fibrosis
Answer: C: Cystic fibrosis 
Explanation: C i.e. Cystic fibrosis