The configuration of the online redo log files is as follows： Based on this configuration， which statement is true？（）
- 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.