In JUNOS software, which would prevent an OSPF router from importing the 10.0.0.4/30 summaryroute?()
A、A. Import policies are not allowed for internal routes, so this is not possible.
B、B. Export policies are not allowed, so this is not possible.
C、C. Apply a firewall filter matching 10.0.0/4/30 and reject the route.
D、D. Apply an import policy matching 10.0.0.4/30 and reject the route.