What does the sign indicate?

What does the sign indicate?
A)Danger due to ice only.
B)Danger due to snow only.
C)Danger due to ice or snow.Correct
The sign in the question indicates danger due to the proximity of a section of the roadway whose surface may be especially slippery because of ice or snow.
Do not confuse it with the "Slippery road" sign, which can be for any reason — the cause is not specified.