Ok, now do one where C and A arrive at the same time to an empty roundabout and A still, to this day, thinks they have the right of way. Because why wait a fraction of a second when I can make others wait for a lot longer?
I hate having classes in a classroom with windows pointing to a roundabout because I get to realize how NO ONE seems to do them correctly... (In Spain, for reference)
I got my driver's license pretty recently and in driving classes I was always told to look at the left first to see if anyone is inside the roundabout, and then to the right to see if I have to let someone go before me (on small roundabouts). Think it from a logical standpoint: A wouldn't even need to completely stop to let C in first, while, if A goes first, C needs to stop and wait while A passes in front of them.
It may be a new rule, because no one seems to know about it (or pay it any mind).