Which standards do HP products support for Power over Ethernet (PoE)?

A.
802.1ah

B.
802 3af

C.
802.3at

D.
802.1az

E.
802.3av

Explanation:
http://bizsupport1.austin.hp.com/bc/docs/support/SupportManual/c02613461/c02613461.pdf (page
1, overview, second para)