Which statement about restrictions for multichassis LACP is true?

A.
It is available only on a Cisco Catalyst 6500 Series chassis.

B.
It does not support 1Gb links.

C.
Converting a port channel to mLACP can cause a service disruption.

D.
It is not available in VSS.

Explanation:
When configuring mLACP for Server Access, follow these guidelines and restrictions:
·PFC3A mode does not support the mLACP for server access feature. ·VSS mode does not support the mLACP for server access feature. ·No more than 100
VLANs can be active on a switch configured as a PoA.
·mLACP does not support half-duplex links.
·mLACP does not support multiple neighbors.
·Converting a port channel to mLACP can cause a service disruption. ·The DHD system priority must be lower (higher numerically) than the PoA system priority.

http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SX/configuration/guide/mlacp _server_support.html