What two considerations should an app builder keep in mind during this process?

An app builder is preparing to deploy a new app from the sandbox to production using change sets.

What two considerations should an app builder keep in mind during this process? Choose 2 answers
A . Salesforce Connect automatically establishes a link between environments.
B. Change sets do not include all components and may have to perform some changes manually.
C. Users should be logged out of production when receiving inbound change sets.
D. Transactions will revert if the deployment errors.

Answer: B,D