How should a router that is being used in a Frame Relay network be configured to keep split horizon issues from preventing routing updates

• Configure a seperate subinterface for each PVC with a unique DLCI and subnet assigned to the subinterface
• Combine multiple Frame Relay circuits as a point-to-point line to support multicast and broadcast traffic
• Configure many subinterfaces in the same subnet
• Configure a single subinterface to establish multiple PVC connections to multiple remote router interfaces.