如果我们在路由器上配置了VPN实例，如需要华为路由器上查看VPN路由，应使用下列哪条命令？
Adisplay in vpn-instance
Bdisplay vpn routing-table
Cdisplay ip routing-table vpn-instance vpn-instance-name
Ddisplay ip routing-table
Adisplay in vpn-instance
Bdisplay vpn routing-table
Cdisplay ip routing-table vpn-instance vpn-instance-name
Ddisplay ip routing-table