Which statement about biliary stents is true?

Which statement about biliary stents is true?

• A. Plastic stents for short-term drainage or bridging; SEMS for longer patency in malignant obstruction; selection depends on survival, anatomy, migration risk.
• B. Plastic stents are for long-term malignant obstruction.
• C. Self-expandable metal stents are used for short-term drainage.
• D. Stents have no impact on outcomes.

Answer: (C)