What is the addressing format of IPv6?

A.
48-bit dotted decimal

B.
48-bit colon-delimited hexadecimal

C.
64-bit dotted decimal

D.
64-bit colon-delimited hexadecimal

E.
128-bit dotted decimal

F.
128-bit colon-delimited hexadecimal

Explanation:
“IPv6 addresses are represented as eight groups of four hexadecimal digits separated by colons.
The length of an IPv6 address is 128 bits”
http://en.wikipedia.org/wiki/IPv6