Which two IPv6 address pairs can be assigned on a point-to-point link with a /125 mask?()
A、2001:DB8::1 and 2001:DB8::2
B、2001:DB8::9 and 2001:DB8::10
C、2001:DB8::10 and 2001:DB8::17
D、2001:DB8::1 and 2001:DB8::18