What is the function of the commit confirmed 10 command?

What is the function of the commit confirmed 10 command?

A.
If a second “commit” does not occur within 10 minutes, the system performs a “rollback 1”, “commit” sequence.

B.
If a second “commit” does not occur within 10 minutes, the system performs a “rollback 0”, “commit” sequence.

C.
This command validates the syntax of a candidate configuration without actually placing it into effect.

D.
If a second “commit” does not occur within 10 minutes, the system performs a “rollback 10”, “commit” sequence.