10. An operating system intended for use on microprocessor based systems that support a single user is A. PC-DOS B. MS-DOS C. UNIX D. CP/M E. None of the above
CP/M, originally standing for Control Program/Monitor and later Control Program for Microcomputers, is a mass-market operating system created for Intel 8080/85-based microcomputers by Gary Kildall of Digital Research, Inc.