A storage specialist needs to automate some tasks triggered in the event of disaster recovery.  What is the best solution to accomplish this（）

• A、using the DS GUI， step through Real Time Manager， Copy Services， Create custom scripts； actions and event conditions can be defined that triggerthe script； there is no need for a password
• B、create a shell script usingdscli commands； trigger the script from the operating system， and call the script using the -pwd option with the password
• C、create a password file； create a shell script using dscli commands； trigger the script from the operating system
• D、create a password file； create a shell script usingdscli commands； trigger the script from the operating system； call the dscli script with the dscli -script  -pwdfile command