Refer to the exhibit. What is the configuration an example of?

A.
modular QoS CLI

B.
AutoQoS for the enterprise

C.
voice and QoS features for IPsec

D.
QoS preclassification over an IPsec tunnel

E.
QoS preclassification over a GRE tunnel

F.
QoS preclassification over a L2TP tunnel