How do Cisco Partner program services benefit a partner?

A.
enlist Cisco representatives as partners to be responsible for all sales and support tasks, thereby assuring a simple hand-off from a customer

B.
use proven Cisco methodologies, intellectual property, tools, and worldwide resources through collaborative services

C.
leverage the Cisco Partner Core-Bridge and Global Partner Network programs along with CiscoTelePresence lifecycle services to better serve its customers

D.
provide customers with high-quality services by reselling the Cisco brand; thus not requiring its own support infrastructure