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.