What is the maximum speed at which we may travel at the precise moment we observe this sign?

What is the maximum speed at which we may travel at the precise moment we observe this sign?
A)50 km/h.Correct
B)90 km/h.
C)110 km/h.
If we observe this sign, we are still driving inside a built-up area, so the maximum speed at which we can travel will be 50 km/h. We will apply the rules outside built-up areas once the sign has been passed.
The generic speed limits on urban roads, depending on the characteristics of the road, are as follows:
a) 20 km/h on roads that have a single platform of roadway and pavement.
b) 30 km/h on roads with a single lane per direction of traffic.
c) 50 km/h on roads with two or more lanes per direction of traffic. (40 km/h for vehicles transporting dangerous goods)
For these purposes, lanes reserved for the circulation of certain users or for exclusive use of public transport will not be counted.
These limits may be reduced or increased by the Municipal Authority subject to specific signage.
On through-roads a limit of 50 km/h is set for all types of vehicles, except for vehicles transporting dangerous goods which will be 40 km/h. This limit may be lowered by agreement of the Municipal Authority with the road owner, subject to specific signage.