The mksysb command completed successfully. Which of the following steps are necessary to verify the mksysb is good?（）

• A、Store the mksysb in a safe place because a successful completion guarantees the mksysb is good.
• B、Boot from the mksysb to verify it is bootable and list the files on the mksysb.
• C、Look at the bosboot output when the mksysb was created to verify it is good.
• D、List the files on the mksysb beucase listing all the files verifies there are no problems with the mksysb.