What are two reasons to implement Cisco IOS MPLS Bandwidth-Assured Layer 2 Services? (Choose two.)

What are two reasons to implement Cisco IOS MPLS Bandwidth-Assured Layer 2 Services? (Choose two.)
A . guaranteed bandwidth and peak rates as well as low cycle periods, regardless of which systems access the device
B . increased resiliency through MPLS FRR for AToM circuits and better bandwidth utilization through MPLS TE
C . enabled services over an IP/MPLS infrastructure, for enhanced MPLS Layer 2 functionality
D . provided complete proactive protection against frame and device spoofing

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Answer: B,C