A Legacy System Is All of the Following, Except

Multiple Choice

A legacy system is all of the following, except:

A) Usually found on a mainframe
B) A system that is already in place, from the past
C) A system that often holds the middle tier of a multiple-tier system.
D) Old systems that often require hard-to-use command languages
E) Systems that most often have detailed information that can be accessed by a system at a higher tier.