Which of the following scenarios reflect the consistency property?

In the library database, there are $50$ books available

Billy has checked and there are $50$ books.

Sam has checked and there are $50$ books.

Billy has taken out $5$ books.

The library system informs Sam of the update and Sam now checks that there are $45$ books.

Sam checks out $10$ books.

There are now $35$ books in the library database.

Tiffany has updated a customer's address while on the phone with them.

The server restarted after Tiffany clicked on save.

When the server comes back up$,$ Tiffany was able to verify that the address was updated.

A user attempts to do a product transfer between companies.

The quantity of the product is moved from the first company.

Only once the product is verified to have been deducted, the quantity is moved to the second company.

Verification is done and identifies that the total amounts