What tasks can only be performed in the default or admin VDC？（）
- A EPLD upgrade， IOS ISSU， FCoE feature enablement， CoPP configuration， and rolling back a checkpoint
- B EPLD upgrade， Cisco IOS ISSU， FCoE feature enablement， CoPP configuration， and ACL capture enablement
- C EPLD upgrade， Cisco IOS ISSU， FCoE feature enablement， CoPP configuration and SNMP configuration
- D EPLD upgrade， Cisco IOS ISSU， FCoE feature enablement， CoPP configuration， and write erase