Can the length of a stopway be added to the runway length to determine the takeoff distance available?

Question

Question ATPL - Airline Transport Pilot license - Performance

QuizVDS · Accepted Answer

No

QuizVDS · Answer

Yes, but the stopway must be able to carry the weight of the aeroplane

QuizVDS · Answer

No, unless its centreline is on the extended centreline of the runway

QuizVDS · Answer

Yes, but the stopway must have the same width as the runway

Id 48 - ATPL - Can the length of a stopway be added to the runway length to determine the takeoff distance available?