Gogogadget said:

Clue is a bad example because the film was released simultaneously with those multiple endings so there is no 'original' version.

In my viewpoint, if someone wants a movie to have all three simultaneously released endings be considered original, that person also has to shoot all three endings simultaneously, which is of course impossible with live actors (Run, Lola, Run is an exception, because all three endings are within the film itself) but not impossible with cartoons (with cartoons, you can do anything with them, you can have multiple scenarios drawn, each by a different person, on paper, at the same time). Otherwise, you can't say "all endings were made at the same time". One ending of Clue must have been filmed first before the others, and I'm guessing it's ending A (where Miss Scarlet is the murderer).