单选题Which statement is true about import and export routing policies?（）A Import policies concern routes received and determine which routes get put into the routing table.B Export policies concern routes received and determine which routes get put into the

Import policies concern routes received and determine which routes get put into the routing table.

Export policies concern routes received and determine which routes get put into the routing table.

Export policies are applied before the routing table.

Import polices are applied after the routing table.