A service host is connected to a storage device through Fibre Channel SAN. However, the service host cannot detect mapped LUNs after scanning. Which of the following are possible causes?

A. The Fibre Channel module on the service host is faulty.

B. No multipathing software is installed on the service host.

C. Zones are incorrectly configured.

D. The storage network is blocked by the firewall.

Reference: https://support.huawei.com/enterprise/en/knowledge/EKB1000458017