Which three options are methods of load-balancing data in an ASA cluster environment?
(Choose three.)

A.
ECMP

B.
floating static routes

C.
PBR

D.
HSRP

E.
distance-vector routing

F.
spanned EtherChannel

Explanation:
http://www.cisco.com/c/en/us/td/docs/security/asa/asa90/configuration/guide/asa_90_cli_config/ha_cluster.html
Redundant Interface (PBR or ECMP)
Spanned EtherChannel With Backup Links