The cisco telepresence portfolio provides industry-leading video-conferencing solutions , how does the Cisco acquisition of tandberg strengthen its position？（）

A.it will give cisco products A strategic advantage by providing privileged access to the TIP

B.it enables cisco to eliminate product redundancies and improve margins

C.it provides cisco with its first high-end telepresence offering

D.it allows cisco to quickly broaden its product portfolio to better serve customer needs