From RTA to RTD, etc., perform IS-IS networking as shown in the figure. The Stem-IDs of RTA, RTC, and RTD are shown in the figure.
Then ______ of the following options can be used as the Stem-ID of RTB.

On MSR routers, the default OSPF link cost values ​​for Gigabit Ethernet, Fast Ethernet, and Ten Gigabit Ethernet are ______ respectively.

Regarding the OSPF protocol, the following statement is wrong is _______.

RTA and RTB establish an IS-IS adjacency relationship on a P2P type link as shown in the figure. The figure shows RTB from running IS-IS to sending CSNP. Then the message types of messages 1 to n may be ______.

In the topology shown in the figure, the following configurations are performed on RTA and RTB respectively:
RTA-ospf-1-area-0.0.0.1]network 192.168.0.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]network 192.168.1.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]network 192.168.2.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]network 192.168.3.0 0.0.0.255
RTA-ospf-1-area-0.0.0.1]network 192.168.4.0 0.0.0.255
RTB] acl number 2000
RTB-acl-basic-2000] rule 0 permit source 192.168.0.0 0.0.0.255
RTB-acl-basic-2000] rule 5 permit source 192.168.1.0 0.0.0.255
RTB-ospf-1-area-0.0.0.1] filter 2000 export
Then the routes that cannot exist in the routing table of RTC are _____