Internet Protocol Version 6 (IPv6) is the next-generation Internet Protocol version designated as the successor to IPv4 because IPv4 address space is being exhausted. Which one of the following descriptions about IPv6 is correct?

A.
Addresses are not hierarchical and are assigned at random.

B.
Only one IPv6 address can exist on a given interface.

C.
There are 2.7 billion addresses available.

D.
Broadcasts have been eliminated and replaced with multicasts.