What is the meaning of the following traffic sign?

- Correct answer: “Stop” sign ahead.
- “Right-of-way” sign ahead.
- Give right-of-way in the roundabout before you.
- A distance of about 150 meters to an approaching roundabout.
Why this is the answer
The correct answer in the official bank: “Stop” sign ahead.
A red warning triangle with a black octagon inside warns that a Stop sign is ahead. The octagon is the shape of the Stop sign, so slow down early and be ready to come to a full stop and give way at the junction. The advance warning for a right-of-way (give way) sign shows an inverted triangle, not an octagon.