A company IT system administrator is responsible for Huawei OceanStor V3 storage system configuration management, conform to the requirements in other conditions, only consider the answer described situation, which of the following configuration about Smart Migration is correct?

A company IT system administrator is responsible for Huawei OceanStor V3 storage system configuration management, conform to the requirements in other conditions, only consider the answer described situation, which of the following configuration about Smart Migration is correct?
A . On Huawei OceanStor V3 respectively configure LUN A and LUN B, create a snapshot for the LUN A, after that LUN A as the source LUN, LUN B as the target LUN, complete Smart Migration configuration.
B . On Huawei OceanStor V3 respectively configure LUN A and LUN B belonging to different controllers, LUN A as the source LUN, LUN B as the target LUN, complete Smart Migration configuration.
C . On Huawei OceanStor V3 respectively configure LUN A and LUN B, mapped LUN B to a host, after that LUN A as the source LUN, LUN B as the target LUN, complete Smart Migration configuration.
D . On Huawei OceanStor V3 respectively configure Thick LUN A and Thin LUN B belonging to different controllers, after that LUN A as the source LUN, LUN B as the target LUN, complete Smart Migration configuration.

Answer: D