Which log type can be enabled to track the changed regions of a volume due to I/O writes to a mirrored volume?

Which log type can be enabled to track the changed regions of a volume due to I/O writes to a mirrored volume?
A . Data Change Object (DCO)
B . Storage Replicator Log (SRL)
C . Dirty Region Log (DRL)
D . Data Change Map (DCM)

View Answer

Answer: C