What steps does HP take to protect customers from counterfeit cartridges?

A.
Product design – Toner formula – Marketing

B.
Prevention – Product packaging – Investigation

C.
Partner network – Local offices – Worldwide presence

D.
Research and Development – Marketing – Reliability

Explanation:
Reference: http://m.tech2.com/news/printers/hp-takes-strong-action-against-counterfeit-suppliesin-india/721982