Which HP switch series leverage a common virtualization technology (HP IRF)? (Select two)

A.
HP 2910 aI Switch Series

B.
HP 3800 Switch Series

C.
HP 5120 EI Switch Series

D.
HP 7500 Switch Series

E.
HP 8200 zI Switch Series

Explanation:

Reference:
http://www.hp.com/hpinfo/newsroom/press_kits/2013/GPC2013/Stacking_Capabilities_Whitepape
r.pdf (page 6, see ‘using HP switch virtualization technologies’ first para))