Which two statements accurately describe QoS in MPLS VPN (RFC 2547bis) networks? (Choose two.)
A . MPLS QoS is a scalable and simple solution because it only requires application at the Edge-LS
C . MPLS can force packets into specific paths and bandwidths based on Edge-LSR mapping of DSCP to EX
E . DiffServ information must be made known to the LSR in the MPLS header using the EXP field.
F . On egress from the Edge-LSR, the EXP field is used for PHB QoS towards the C
Answer: BC