Which HP technology increases 600 by 600 dpi files to print effectively at 1200 dpi?

A.
HPFastRes 1200

B.
HP Laser Modulation

C.
HP ImageREt Technology

D.
HP Intelligent Color Control

Explanation:
Reference: http://h10010.www1.hp.com/wwpc/pscmisc/vac/us/product_pdfs/439423.pdf (page 2,
see technical specifications table and find resolution. See the sentence in brackets)