Refer to the exhibit.
Four customer sites are connected through an EoMPLS-based VPLS over an MPLS provider. You are migrating from OSPF to multi-level IS-IS as the routing protocol to run on the four CE routers, and connectivity between all four sites is required. You want to control which CE or CEs will be elected as the Designated Intermediate System. Which two key aspects should be taken into account? (Choose two.)
A. The DIS role for Level1 and Level2 can be performed by different routers.
B. The CE with the second highest priority will be elected as the backup DIS on the LAN segment.
C. One of the CE routers will be elected as the DIS based on interface priority then highest MAC address.
D. It is recommended to use point-to-point link type on the CEs.
E. If a new CE router is added to the VPLS cloud with a lower interface priority it will become the DIS.
