I'd choose C.) and here is why. If I asked someone for directions to a hotel they are going to describe the roads and buildings to me. They might say it is built in an embankment then I know to look for a hotel in an embankment. If this is wrong please let me know so I can research more on the subject.
Could you post a photo of the graph?
In china it as a lot of the worlds population
Sorry don’t know what that is