癌和肉瘤的主要不同点在于（）。

A.患者年龄

B.肿块质地

C.组织来源

D.转移途径

E.生长方式

Virtualization is an approach to IT that pools and shares (86) so that utilization is optimized and supplies automatically meet demand. Traditional IT environments are often silos, where both technology and human (87) . are aligned around an application or business function. With a virtualized (88) , people, processes, and technology are focused on meeting service levels, (89) is allocated dynamically, resources are optimized, and the entire infrastructure is simplified and flexible. We offer a broad spectrum of virtualization (90) that allows customers to choose the most appropriate path and optimization focus for their IT infrastructure resources.

A．advantages

B．resources

C．benefits

D．precedents