In which format does an iSCSI target ID appear?

In which format does an iSCSI target ID appear?

A.
iqn.<year-mo>.<reversed_domain_name>:<unique_name>

B.
iscsi.<year-mo>.<forward_domain_name>:<unique_name>

C.
iqn.<ip_address>.<reversed_domain_name>

D.
iscsi.<organizational_unit>.<forward_domain_name>:<unique_name>

Explanation: