The correct answer is B.
OBJ-3.5: The subject alternative name (SAN) is a field in a digital certificate that allows a host to be identified by multiple host names or domain names. Certificates that use a SAN are referred to as a multi-domain certificate. The common name (CN) is the fully qualified domain name (FQDN) of the server that was issued a digital certificate in a PKI implementation. The organizational unit (OU) describes the division or department within the organization. The country (C) field lists the country of operation for the organization. When using a multi-domain certificate, you must list all of the associated domain names in the SAN field.