Which of these allows static or dynamic grouping based on inclusion and exclusion of objects such as virtual machines, vNICs, cSphere clusters, and logical
switches?

A.
Uplink

B.
Active Directory (AD)

C.
Port

D.
Security group

Explanation:
http://blogs.vmware.com/consulting/2015/01/automating-security-policy-enforcement-nsx-service-composer.html