Task: Class Definition Understanding (ontology: Business_Finance/BPMN)

Which of the following definitions best describes 'Message'?

A. the concept, which is used in the definition of attributes
	for a Start Event, End Event, Intermediate Event, Task, and the concept 
	Flow, and which extends the set of common BPMN Element attributes (see 
	Table B.2)
B. the concept, which is used in the definition of attributes for 
	Gateways, and which extends the set of common BPMN Element attributes 
	(see Table B.2).
C. These are the elements that define the 
	basic look-and-feel of BPMN. Most business processes will be modeled 
	adequately with these elements
D. An activity is a generic term 
	for work that company performs. An activity can be atomic or non-atomic
	(compound). The types of activities that are a part of a Process Model 
	are: Process, Sub-Process, and Task. Tasks and Sub-Processes are 
	rounded rectangles. Processes are either unbounded or a contained 
	within a Pool.

Answer: the concept, which is used in the definition of attributes
	for a Start Event, End Event, Intermediate Event, Task, and the concept 
	Flow, and which extends the set of common BPMN Element attributes (see 
	Table B.2)