49.Which statement about recovering from the loss of a redo log group is true?
A.If the lost redo log group is ACTIVE, you should first attempt to clear the log file.
B.If the lost redo log group is CURRENT, you must clear the log file.
C.If the lost redo log group is ACTIVE, you must restore, perform cancel-based incomplete recovery, and open the database using the RESETLOGS option.
D.If the lost redo log group is CURRENT, you must restore, perform cancel-based incomplete recovery, and open the database using the RESETLOGS option.
正确答案是D