What are two enhancements that OSPFv3 supports over OSPFv2?

A.	It supports up to 2 instances of OSPFv3 over a common link.
B.	It can support multiple IPv6 subnets on a single link.
C.	It routes over links rather than over networks.
D.	It requires the use of ARP.
E.	It supports IPv6 with MD5 authentication.