社会工作者张兰和同事一起探讨企业为何进行捐款，她们可能探讨的方面包括（）。

A.塑造形象

B.公共关系

C.自我利益

D.税法策略

E.社会联谊

Virtualization is an approach to IT that pools and shares (36) so that utilization is optimized and supplies automatically meet demanD. Traditional IT environments are often silos, where both technology and human (37) are aligned around an application or business function. With a virtualized (38) , people, processes, and technology are focused on meeting service levels, (39) is allocated dynamically, resources are optimized, and the entire infrastructure is simplified and flexible. We offer a broad spectrum of virtualization (40) that allows customers to choose the most appropriate path and optimization focus for their IT infrastructure resources.

A．system

B．infrastructure

C．hardware

D．link