If You Open a File, Make Changes to the Document

Multiple Choice

If you open a file, make changes to the document in the file, and then save the document under the same filename, what happens to the original file?

A) The original file remains unchanged.
B) The original file is moved to another folder and stored as a backup copy.
C) The original file is put in the Recycle Bin to make space for the new copy of the file.
D) The original file is replaced with a new copy of the same file with the changes you've made.