What Is an Open System

What is an open system?

A) Contains a repertoire of web-based data and procedural resources that use shared protocols and standards permitting different applications to share data and services
B) The capability of two or more computer systems to share data and resources, even though they are made by different manufacturers
C) A broad, general term that describes nonproprietary IT hardware and software made available by the standards and procedures by which their products work, making it easier to integrate them
D) A computer system designed that in the event a component fails, a backup component or procedure can immediately take its place with no loss of service