Which two statements are true about OSPFv3? (Choose two.)
A . OSPFv3 uses a 32-bit router ID to uniquely identify a node in the network.
B . OSPFv3 uses a 128-bit router ID to uniquely identify a node in the network.
C . OSPFv3 routes are always preferred over OSPFv2 routes for all traffic.
D . OSPFv3 and OSPFv2 can be configured at the same time.
Answer: A,D