What accurately describes IPv6 addressing?

What accurately describes IPv6 addressing?
A . IPv6 addresses are denoted by eight groups of four hexadecimal numbers.
B . IPv6 uses 128 hexadecimal numbers instead of the 32 hexadecimal numbers used by IPv4.
C . IPv6 is used to converse IP addresses and utilize private addresses.
D . IPv6 uses broadcast addresses for neighbor discovery.

Answer: A