How would you conduct yourself when approaching an intersection that is preceded by a “stop” sign?

1. A Stop and give right-of-way to any other vehicle that is entering or approaching the intersection from a different roadway.
2. B Give right-of-way to any other vehicle that is entering or approaching the intersection from a different roadway.
3. C You are only obliged to stop when vehicle traffic on the crossing road is approaching from your right.
4. D You are only obliged to stop when a policeman instructs you to do so.