At a roundabout just outside Stadskanaal, alongside the N31, you see no sign at all and no shark's-teeth markings. A cyclist is entering the roundabout from your right; you are already driving on the roundabout. What applies?
You have priority, because traffic on the roundabout always goes first
You have priority, because the cyclist comes from the right and cyclists must always wait on a roundabout
The cyclist has priority, because without a sign the rechts-regel applies to entering traffic
Explanation
Wrong — trap: forgetting the unsigned exception. Without a sign/shark's-teeth the rechts-regel applies: the entering cyclist has priority (Book p.84).