单项选择题

A. The LGWR process concurrently writes the redo log entries to both the members of a group.
B. When a member of a group becomes corrupt, the database crashes.
C. The sizes of the redo01a.log and redo01b.log online redo log members of group Group1 can be different.
D. When redo02a.log and redo02b.log files become corrupt, then the database operations will proceed as normal.