What does this traffic sign combination indicate?

You answered correctly with "Stop. Give way."

This traffic sign combination means that although you currently only have to give way (yield) at this point, 100 meters ahead there will be a stop sign where you must come to a complete stop. The red and white downward triangle alone means "Give way" (yield), but the additional sign underneath warns you that a mandatory stop is approaching.

So, you should be prepared to stop soon, but for now, slow down and give way to other vehicles if necessary. This helps to anticipate and prepare for the stop ahead safely and responsibly. Understanding this combination prevents sudden stopping and ensures smooth traffic flow.