Which of the following actions should be performed when implementing a change to a database
schema in a production system?

A.
Test in development, determine dates, notify users, and implement in production

B.
Apply change to production, run in parallel, finalize change in production, and develop a back-out
strategy

C.
Perform user acceptance testing in production, have users sign off, and finalize change

D.
Change in development, perform user acceptance testing, develop a back-out strategy, and
implement change