Which two of these statements are true of IPv6 address representation?（）

A. There are four types of IPv6 addresses: unicast, multicast, anycast, and broadcast.
B. A single interface may be assigned multiple IPv6 addresses of any type.
C. Every IPv6 interface contains at least one loopback address.
D. The first 64 bits represent the dynamically created interface I
E. Leading zeros in an IPv6 16 bit hexadecimal field are mandatory.