Why is the term “Compatible Cartridge” confusing for customers?

A.
It is a term for a Remanufactured cartridge

B.
It is a term used for Refilled, Remanufactured and Clone cartridges.

C.
It is a term for a product with a low purchasing price.

D.
It is a term for a 100% new cartridge

Explanation:
http://www.webopedia.com/TERM/C/compatible_cartridge.html