某网络运行IS-IS,该网络中一台路由器R4的LSP信息如下所示,下列说法中正确的有()。displayisislsdb4004.0000.0004.00-01verboseDatabaseinformationforISIS(1)-------------------------------------------Level-2LinkStateDatabaseLSPIDSeqNumChecksumATT/P/OL;4004.0000.0004.00-01*0x000000010x3f110/0/0SOURCE4004.0000.0004.00IP-External10.0.0.4255.255.255.255COST:64TotalLSP(s):1*(InTLV)-LeakingRoute*(ByLSPID)-SelfLSP+-SelfLSP(Extented)
A.该LSP描述的外部路由为10.0.4.4/32
B.R4的SystemID为4004.0000.0004
C.该LSP是伪节点产生的LSP
D.R4到达该外部路由的Cost为64