Which Cisco Application Centric Infrastructure component is responsible for policy instantiation?

A.
Database tier

B.
Logical model

C.
Leaf

D.
Application network profile

E.
Application tier

F.
Controller

Explanation:
Reference: http://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/applicationcentric-infrastructure/white-paper-c11-731860.html (see figure 10)