Yes. There is the original written version by Charles Dickens which has a very specific language and narrative style. Then there are film adaptations which often have to make changes for the visual medium. Some might cut certain parts, add new scenes for drama, or change the pacing, making them different versions in their own right.
No. 'A Christmas Carol' has been adapted by many people over the years, but Bob Clark is not among those associated with it. His work was mainly in 'A Christmas Story', which has its own unique charm and story that is distinct from 'A Christmas Carol'.
Yes, there have been numerous remakes of 'A Christmas Carol'. It's a very popular and timeless story, so many filmmakers have taken on the task of remaking it over the years. Each remake often brings its own unique interpretation, whether it's through different acting styles or updated special effects.
No. The ACDC singer is from the world of rock music. 'A Christmas Carol' is a literary and cinematic work with a different theme and style. They don't intersect in any way.