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 sends Andy an email attachment named OurProject.tif.Andy tries to open the attachment but can't.His problem may be that ____.

A) the file is corrupted
B) he doesn't have the correct software
C) someone changed the file extension
D) any of the above