A storage administrator is troubleshooting lack of connectivity between an iSCSI-initator and
iSCSI-target that is located behind a firewall. The firewall has the following active rule base:
Allow udp port 3260
Allow tcp port 443
Allow icmp all
Deny all
Which of the following is the MOST likely issue?

A.
iSCSI does not function behind a firewall due to the RPC protocol.

B.
iSCSI also requires TCP/3260 to be allowed.

C.
The issue is not firewall related as iSCSI is not a TCP/IP-based protocol.

D.
iSCSI does not function behind a firewall due to NAT requirements.