Which respect to IPv6 addressing, from a design perspective, which of these statements is it important to keep in mind?

A.
IPv6 addressing provides convenience of anycast addressing without any configuration requirements.

B.
IPv6 does not use multicast addressing.

C.
An IPv6 router will not forward packets from one link to other links if the packet has either a link- local source or a link-call destination address.

D.
Dynamic address assignment requires DHCPv6.

Explanation:
Link local addresses are local to the LAN only, they are not communicated across LAN boundaries.
Link: http://www.cisco.com/en/US/docs/solutions/Enterprise/Campus/CampIPv6.html