Referring to the exhibit, your network management systems have alerted you to a loss of
connectivity to the CE2 router in your Layer 3 VPN. The loopback address of the CE router is
10.10.1.1/32.Which operational command on PE2 verifies connectivity across the PE-CE link?
ping 10.10.1.1 table customer-a
ping 10.10.1.1 instance customer-a
ping 10.10.1.1 routing-instance customer-a