How does an IPv6 host automatically generate a global address?

A.	It prepends its interface identifier to the network prefixes contained in Router Advertisement messages.
B.	It appends its interface identifier to the network prefixes contained in Router Advertisement messages.
C.	It appends its interface identifier to the network prefixes contained in Router Solicitation messages.
D.	It prepends its interface identifier to the network prefixes contained in Router Solicitation messages.