Which BIOS is used in HP Compaq 515/516 and Compaq 615 notebooks?

A.
HP UEFI BIOS

B.
AMI BIOS

C.
Phoenix BIOS

D.
legacy HP BIOS

Explanation:
http://h30434.www3.hp.com/t5/Other-Notebook-PC-Questions/Optimize-Update-UEFIon-Compaq-515-516-615/td-p/328980