The advantage of a command processor running only built-in commands is:

• A. the command set being common across different hardware configurations
• B. None of these
• C. flexibility to the users in running lists of commands by simply collecting them in named batch command files
• D. the processing is much faster than would other-wise be the case when user defined commands are used
• E. users can create system programs and run them as commands

Answer: (A)