According to the 2010 QualityLogic laser study, how much more can non-HP toner cartridges cost
over time?

A.
up to 20%

B.
up to 60%

C.
up to 70%

D.
up to 90%

Explanation:
Reference:
http://infovilag.hu/data/files/toner_tour_presentation_february_2012_final_press_WO5yaF.pdf
(slide 28)