which three EtherChannel modes are supported?

On Cisco ASA Software Version 8.4.1 and later, which three EtherChannel modes are supported? (Choose three.)

A.
active mode, which initiates LACP negotiation

B.
passive mode, which responds to LACP negotiation from the peer

C.
auto mode, which automatically responds to either PAgP or LACP negotiation from the peer

D.
on mode, which enables static port-channel mode

E.
off mode, which disables dynamic negotiation

Explanation:
http://www.cisco.com/en/US/docs/security/asa/asa84/configuration/guide/interface_start.html#w p1329030
Link Aggregation Control Protocol
The Link Aggregation Control Protocol (LACP) aggregates interfaces by exchanging the Link Aggregation Control Protocol Data Units (LACPDUs) between two
network devices. You can configure each physical interface in an EtherChannel to be:
Active–Sends and receives LACP updates. An active EtherChannel can establish connectivity with either an active or a passive EtherChannel. You should use
the active mode unless you need to minimize the amount of LACP traffic.
Passive–Receives LACP updates. A passive EtherChannel can only establish connectivity with an active
EtherChannel.
On–The EtherChannel is always on, and LACP is not used. An “on” EtherChannel can only establish a connection with another “on” EtherChannel. LACP
coordinates the automatic addition and deletion of links to the EtherChannel without user intervention. It also handles misconfigurations and checks that both

ends of member interfaces are connected to the correct channel group. “On” mode cannot use standby interfaces in the channel group when an interface goes
down, and the connectivity and configurations are not checked.