Near Cadzand you are driving on the exit lane, to the right of the block marking, behind a slow-moving driver on the through lane. There is enough room and it helps traffic flow. May you overtake that driver on the right?
Only if you first merge back onto the through lane and overtake from there
No, overtaking on the right is not allowed on an exit lane
Yes, this is exactly the exception the book names for the exit lane
Explanation
False — That is an unnecessary detour; the exit lane itself is where the book allows this right-overtaking (Book p.153).