Tom and Andy Are Discussing File Storage

Multiple Choice

Tom and Andy are discussing file storage. They are working on a major project and want to be sure they can store their files in a way so they can easily be found and shared with others.
-Tom asked Andy if he converts a file,will it be identical to the original? Andy should tell him ____.

A) no
B) sometimes
C) yes
D) yes,but you can't convert it back