What does this sign prohibit?

A)Parking throughout the built-up area.Correct
B)Parking on the through-road.
C)Parking only until the next intersection.
When we find a regulation sign next to a sign indicating entry to a built-up area, that regulation will apply throughout the entire built-up area, unless we find different signage inside.
In this case, parking will be prohibited throughout the entire built-up area.
In this case, parking will be prohibited throughout the entire built-up area.