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: Surgery
Treatment for common bile duct stone is by ? 
Select and explain. 
A. ESWL, B. Exploration of bile duct and recovery of stones, C. Bile duct stenting, D. All
D: All
Answer: D: All 
Explanation: Answer (a) ESWL, (b) Exploration of bile duct and recovery of stones, (c) Bile duct stenting