What do these signs indicate?

A)Succession of curves and maximum recommended speed for 2,000 metres.Correct
B)Succession of curves and maximum recommended speed at 2,000 metres.
C)Succession of curves and minimum speed within 2,000 metres.
When the lower sign has an arrow on each side, it indicates the length of the section. When it has no arrows, it indicates the distance to the start of the hazard or restriction.