Which technology does HP use with most of its inkjet printers?

A.
HP Bulbjet technology
B.
HP Piezo inkjet technology
C.
HP liquid crystal technology
D.
HP thermal inkjet technology
Explanation:
Reference: http://h10088.www1.hp.com/cda/gap/display/main/index.jsp?zn=gap&cp=20000-
13698-13855-14056%5E203738_4041_100__