A new VPLEX cluster has been configured. However, you are unable to register any host initiators. After verifying that the host has been properly zoned to the VPLEX cluster, you still cannot register them. What is a possible cause?

A new VPLEX cluster has been configured. However, you are unable to register any host initiators. After verifying that the host has been properly zoned to the VPLEX cluster, you still cannot register them. What is a possible cause?
A . Front end ports have not been enabled.
B . Back-end ports have not been enabled.
C . Back-end arrays have not presented any LUNs.
D . Storage View for host has not been created.

Answer: C