What does the Cisco Technical Support Services portfolio provide customers?

A.
resources that help ensure that Cisco products operate efficiently, remain highly available, and benefit from up-to-date system software

B.
consultation that helps customers benefit from Cisco internal best practices, Internet Protocol (IP) expertise, and networking experience

C.
consultation that helps customers identify third-party software and equipment that enables their business applications to meet their own specific business goals

D.
a unified suite of professional engineering support offerings that helps customers ensure their networks can support the latest network applications and technologies