What is the meaning of the following traffic sign?

Choose an answer to test yourself:

1. AIt is forbidden to exceed the speed indicated in the sign (in k.p.h).
2. BRoad for motor vehicles that are permitted and capable of driving at least the speed indicated in the sign (in k.p.h).
3. CSpeed limit of 55 k.p.h.
4. DIt is forbidden to drive slower than the speed indicated in the sign (in k.p.h).

Topic: Road Signs · עברית