You have configured the ASM instance for the PROD database of iPod Corporation. You have specified the following parameter values in the initialization parameter file：  
DB_CREATE_FILE_DEST=’devices/grp1/P’  
DB_CREATE_ONLINE_LOG_DEST_1=’devices/d_grp2/Q’       
DB_CREATE_ONLINE_LOG_DEST_2=’devices/d_grp3/R’       
BACKGROUND_DUMP_DEST=’devices/d_grp1/S’  
You have added a new redo log group that contains two redo log members. Where are the redo log members stored？（）