Which of these explanations is the best?
Choose 1 answer:
When a file has an extension, the user knows who created the file.
When a file has an extension, the computer can decide what application to open it in.
When a file has an extension, the computer knows exactly how much memory it needs to
allocate for it
When a file has an extension, users can open files in applications they don't own.
When a file has an extension, the computer is allowed to store additional metadata about it.