Which three measures should the Consultant recommend to ensure transparency during the upgrade process?

Universal Containers has scheduled a major upgrade to its Customer Community next month. The community is expected to be unavailable for approximately 8 hours. The executive team is concerned about how the upgrade and associated outage will impact customers.

Which three measures should the Consultant recommend to ensure transparency during the upgrade process? Choose 3 answers
A . Publish ongoing updates to the community knowledge base with details about the upgrade.
B . Communicate information about the upgrade to customers in advance.
C . Send routine status updates to customers via Chatter during the upgrade.
D . Replace the default outage page with a custom page containing upgrade information.
E . Notify customers once the upgrade is completed and full services are restored.

Answer: B,D,E