What Is a Service-Oriented Architecture

What is a service-oriented architecture?

A) A business-driven enterprise architecture that supports integrating a business as linked, repeatable activities, tasks, or services.
B) A business task.
C) The capability of services to be joined together on demand to create composite services, or disassembled just as easily into their functional component.
D) The capability of two or more computer systems to share data and resources, even though they are made by different manufacturers.