In the parameter file of your production database， the FAST_START_MTTR_TARGET parameter is set to 300 to optimize instance recovery. While observing the performance of the database during instance recovery， you find that the redo log files are not sized properly to support this activity. Which two sources could you use to determine the optimal size of the redo log files？（）

• A、 the V$LOG view
• B、 the V$DBFILE view
• C、 the V$LOGFILE view
• D、 the V$INSTANCE_RECOVERY view
• E、 Oracle Enterprise Manager Database Control