Can the edge line of the carriageway be crossed?

A)Yes, when the line is broken; no, when it is continuous.
B)No, it is prohibited.
C)Yes, when necessary and circumstances permit.Correct
The edge line of carriageways marks the edge of the road to make it more visible. This line does not have the same meaning as a longitudinal white road marking. It may be crossed for various reasons, for example to enter a property, to make an emergency stop on the hard shoulder, to park outside the trafficable area of the hard shoulder, etc.