What is the relationship between visibility and RVR in homogeneous fog?

Question

Question ATPL - Airline Transport Pilot license - Meteorology

QuizVDS · Accepted Answer

The visibility generally is less than the RVR.

QuizVDS · Answer

There is no specific relationship between the two.

QuizVDS · Answer

The visibility generally is the same as the RVR.

QuizVDS · Answer

The visibility generally is greater than the RVR.

Id 436 - ATPL - What is the relationship between visibility and RVR in homogeneous fog?