How would you classify each of the following systems in terms of one or more of the domains batch, reactive or concurrent? (a) A bank autoteller machine. (b) A system utility program used to list the...

How would you classify each of the following systems in terms of one or more of the domains batch, reactive or concurrent? (a) A bank autoteller machine. (b) A system utility program used to list the contents of a user’s directory (such as the Unix Is). (c) An interpreter for a programming language. (d) A multi-user operating system. (e) An airline seat reservation system with terminals in travel agents’ offices.