Which two types of mechanisms can be used to provide load balancing across parallel links in a redundant campus network?

Which two types of mechanisms can be used to provide load balancing across parallel links in a redundant campus network? (Choose two.)

A.
QoS

B.
HSRP

C.
VRRP

D.
802.1Q

E.
EtherChannel link aggregation

F.
Cisco Express Forwarding load balancing