Which customer is most likely to purchase an HP Lync Solution?

A.
a customer with Lync instant messaging and an aging PBX system

B.
a customer with standalone conferencing tools and aging instant messaging

C.
a customer with phone, e-mail, and instant messaging services from different providers

D.
a customer with Outlook e-mail and a separate PBX system

Explanation:
Reference: http://h71028.www7.hp.com/enterprise/cache/561534-0-0-0-121.html