Asynchronous replication is defined as which of the following?

Asynchronous replication is defined as which of the following?

A.
Data write is acknowledged to the host at the secondary site only, and then sent to primary site as network availability permits.

B.
Data write is acknowledged to the host at the primary site only and then sent to secondary site as network capabilities allow.

C.
Data write is not acknowledged to the host until transfer has been verified by secondary controller.

D.
Data write is acknowledged to the host at both primary and secondary simultaneous^ and transferred as network capabilities allow.