On a network using RIPng, the prefix field of a routing table entry has a value of 0:0:0:0:0:0:0:0. What does this value signify?
A. The next hop address is unknown.
B. The next hop address is a site-local address.
C. The neighboring router has IPv6 ND disabled.
D. The next hop address must be the originator of the route advertisement.
E. The associated route follows a default route out of the network.
