Which of the Following Statements About the Info Stamper in an OceanStor

Which of the following statements about the info stamper in an OceanStor 9000 storage system is not correct?

A) Oceanstor 9000 uses COW technology for metadata
B) Oceanstor 9000 uses ROW technology for data
C) Between snapshots of different versions, there is common data between the snapshot and the current year
D) According to the snapshot version data objects have a backward dependency, so when reading the snapshot data, according to the object dependencies, the system determines from which object to read.