What is the meaning of the following traffic sign?

- In the intersection ahead only left U-turn is permitted.
- Correct answer: Give right-of-way to traffic crossing your path within the roundabout and pass the roundabout from its right side.
- You have right-of-way in the roundabout, and pass the roundabout from its right.
- Pass the place that is marked in the signpost from its left only.
Why this is the answer
The correct answer in the official bank: Give right-of-way to traffic crossing your path within the roundabout and pass the roundabout from its right side.
The sign marks a roundabout. Those entering it give right-of-way to traffic crossing their path within the roundabout. Traffic in the roundabout moves counterclockwise, so the central island stays on the left, which means you pass the roundabout from its right side.