According to our Enterprise Architecture as a Strategy textbook, which of the following correctly describe aspects of the relationship between the enterprise architecture and the IT engagement model? (Choose all that apply.)

	a.	The IT engagement model is central to the definition of the enterprise architecture.
	b.	The IT engagement model provides a framework for senior-level IT decisions that drive the enterprise architecture.
	c.	The IT engagement model is the system of governance that guides business and IT projects so that they contribute to the development and evolution of the enterprise architecture.