What does this sign indicate?

A)That one lane is diverted onto the opposite carriageway due to roadworks.
B)That the road goes from one to two lanes of traffic due to roadworks.
C)That two lanes are diverted onto the opposite carriageway due to roadworks.Correct
This sign indicates the diversion of two lanes onto the opposite carriageway. It is used on roads where roadworks are being carried out.
Signs in general, in roadwork sections, will have a yellow background but the meaning of the sign will not change. The following sign indicates danger due to the proximity of a roadwork section:
Signs in general, in roadwork sections, will have a yellow background but the meaning of the sign will not change. The following sign indicates danger due to the proximity of a roadwork section: