You are driving on the motorway near Landgraaf and want to take a break. Before you turn off, you want to know whether the next service area has a restaurant and a filling station. Where do you get that from?
Sign K4, with the name of the service area and symbols of its facilities
Sign K3, with the name of the service area and symbols of its facilities
That is not shown in advance; you only see it at the service area itself
Explanation
False — you mix up the sign numbers. K4 is the high decision sign with panels for the through and the exit direction. K3 points to a service area, with its name and symbols of the facilities (Book p.77).