In JUNOS software, which would prevent an OSPF router from importing the 10.0.0.4/30 summaryroute?（）

• A、Import policies are not allowed for internal routes, so this is not possible.
• B、Export policies are not allowed, so this is not possible.
• C、Apply a firewall filter matching 10.0.0/4/30 and reject the route.
• D、Apply an import policy matching 10.0.0.4/30 and reject the route.