How can this customer prevent unauthorized hosts from connecting to the Cisco MDS 9000 fabric through the FCIP interfaces?

A customer has implemented an 18/4 MSM for FCIP connectivity to remote sites. How can this customer prevent unauthorized hosts from connecting to the Cisco MDS 9000 fabric through the FCIP interfaces? Select the best response.

A.
Configure RADIUS authentication.

B.
ConfigureIPsec encryption on the 18/4 MSM.

C.
Configure IP ACLs on the 18/4 MSM.

D.
Configure fabric binding on the 18/4 MSM.