What does this sign mean?

What does this sign mean?
A)Obstruction on the roadway due to breakdown, accident or other causes.Correct
B)That traffic flow is hindered by traffic congestion.
C)Proximity to an area of the roadway whose pavement may be slippery.
The sign indicates that the roadway is obstructed due to accident, breakdown or other causes.
Answers B and C would be correct if the signs in the question were respectively the following: