Which of these is the best definition of the Cisco Lifecycle Services approach? Select exactly 1 answer(s) from the following:()。
A.It defines the minimum set of services required to successfully deploy and operate a set of Cisco technologies
B.It determines how best to price Cisco products
C.It provides partners with a useful way to leverage Cisco resources
D.It consists of these phases: plan, deploy, support, and troubleshoot