【名词&注释】
工作流引擎(workflow engine)、工作流系统(workflow system)、工作流管理(workflow management)
[单选题]The(1) is a general description of the architecture of a workflow management system used by the WFMC, in which the main components and the associated interfaces are summarized. The workflow enactment service is the heart of a workflow system which consists of several(2).
A. B