The following output occurs on Router R1. Which of the following cannot be determine d from this output?（） R1# show ip route 180.1.1.0 255.255.255.240 Routing entry for 180.1.1.0/28 Known via "bgp 2", distance 20, metric 0 Tag 3, type external Last update from 192.168.1.2 00:10:27 ago Routing Descriptor Blocks: * 192.168.1.2, from 19 2.168.1.2, 00:10:27 ago Route metric is 0, traffic share count is 1 AS Hops 2 Route tag 3

• A、The type of BGP peer (iBGP or eBGP) that advertised this route to R1
• B、R1's ASN
• C、The next - hop router's ASN
• D、The AS_Path length