Why is it important to extract embedded files within documents intact?

	a.	It really isn't important--only the contents of the file itself is what needs to be extracted.
	b.	It really isn't important--only the metadata of the file itself is what needs to be extracted.
	c.	To preserve the ExIFdata for pictures or metadatafor other types of embedded files such as documents, spreadsheets, audio and video.
	d.	Because it allows you to be able to edit the embedded files regardless of which application you're opening it up in.