Which of the following about self-generated traffic QoS is TRUE?

The DSCP marking stays ncl for all applications; only the internal forwarding class is manipulated across different applications.

DSCP bits can be set per application, per routing instance.

The internal forwarding class for self-generated traffic is set once and applied to the base router and all VPRN instances.

Self-generated traffic can be marked at Layer 2 no matter what encapsulation is used on the network interfaces.