Match the following recommendations with the appropriate commands or queries:

I. Perform this before running an action query.
II. Do this very carefully.
III. Use this to help find redundant data.
IV. Be aware that this is true of all action queries.
V. Doing this will delete an existing table.

A. Create and run a Find duplicates query.
B. Run a Make table query
C. Run an Update query a second time.
D. They cannot be undone.
E. Backup database

E, C, A, D, B