Which choice defines the term durability when used to describe the properties of a transaction?

A.
Durability guarantees that transactions running at the same time will not have access to each
others partial results.

B.
Durability guarantees that a committed transaction will persist despite any type of system
failure.

C.
Durability guarantees that logically related operations are dealt with as a single unit.

D.
Durability guarantees that a transaction will either result in a new valid system, or the system
will be restored to its original state.