Answer: The correct answer should be
A. The original story begins with Helen arriving at the apartment shared by Holmes and Watson, whereas the film begins with the scene of Helen's sister's death.
D. In the original story, the "speckled band" refers to a type of clothing worn by the gypsies, whereas in the film version it refers to a snake's skin.
Explanation: This was the exact information I found online. Hope this helped! :)