The customer forgot the admin password for the Storage Manager and had access denied to the storage. No additional admin accounts have been created.  What should be done to access the storage again（）

• A、access the storage through the serial port and change the password for the admin account
• B、log a call to IBM support
• C、log in to the HMC and open a browser； no password is required
• D、download a script from the IBM website and reset the password with the superuser account