In Huawei Oceanstor V3 storage system, which of the following description about HyperClone is wrong?

In Huawei Oceanstor V3 storage system, which of the following description about HyperClone is wrong?
A . Clone is one of snapshot technology, a complete copy of the source data at some point in time, it is a kind of incremental synchronization backup mode
B . can be split into two independent LUN
C . reverse synchronization allows the changed data from the LUN copy to the original LUN
D . When you create a clone,the original LUN can be ThickLUN, slave LUN is ThinLU

Answer: C