Which of the following is a valid IPv6 address?

Which of the following is a valid IPv6 address?

A.
2001:db8:3241::1

B.
2001::db8:4581::1

C.
2001:db8:0g41::1

D.
2001%db8%9990%%1

E.
2001.db8.819f..1

Explanation: