On a Cisco Nexus 7000 Series Switch， what is the purpose of this command？（）  switch# config terminal  switch（config）# mac address-table learning-mode conversational vlan 1-10  switch（config）#   

• A、 Enable conversational learning on FabricPath vlans 1-10 for F-Series module
• B、 Enable FabricPath protocol on VLANs 1–10
• C、 No need for this command as conversational learning is enabled by default for all VLANs.
• D、 Enable conversational learning on Classical Ethernet VLAN for F-Series module