What is a key benefit of using the Cisco Modular QoS Command Line Interface (MQC)?

A.
Provides performance metrics for QoS configurations.

B.
Eliminates the need for map classes to perform traffic classification.

C.
Allows users to specify traffic classes independently from QoS polices.

D.
Allows QoS policy information to be automatically distributed throughout the network.

E.
Provides an integrated testing mechanism for traffic classification and QoS policy configurations.

Explanation:

Modular Quality of Service (QoS) Command-Line Interface (CLI) is a feature that allows users to specify a traffic class independently of QoS policies.
Reference:
http://www.cisco.com/en/US/products/sw/iosswrel/ps1835/products_configuration_guide_chapter09186a00