You are using replication and the binary log files on your master server consume a lot of disk space. Which two steps should you perform to safely remove some of the older binary log files?（）

• A、Use the command PURGE BINARY LOGS and specify a binary log file name or a date and time to remove unused files
• B、Execute the PURGE BINARY LOGE NOT USED command
• C、Remove all of the binary log files that have a modification date earlier than today
• D、Edit the .index file to remove the files you want to delete
• E、Ensure that none of the attached slaves are using any of the binary logs you want to delete