单选题For which routes does LDP advertise a label binding？（）Aall routes in the routing tableBonly the IGP and BGP routes in the routing tableConly the BGP routes in the routing tableDonly the IGP routes in the routing table
单选题
For which routes does LDP advertise a label binding？（）
A
all routes in the routing table
B
only the IGP and BGP routes in the routing table
C
only the BGP routes in the routing table
D
only the IGP routes in the routing table
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