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

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

Answer: (D)