Using the rules for IPv6 addressing, how can the address
2031:0000:240F:0000:0000:09C0:123A:121B be rewritten?

A.
2031:0:240F::09C0:123A:121B

B.
2031::240F::09C0:123A:121B

C.
2031::240F:9C0::123A:121B

D.
2031::240F:::09C0:123A:121B

Explanation:
Leading zeros can be truncated. For example “0000 can be be just written as empty. In the above
example :: indicates that it has multiple 0s in that location. Typically the IPv6 format can be written

down in three ways 1) compressed, 2) uncompressed and 3) fully uncompressed as shown below.
All of the following are the same: