What is the purpose of configuring router R1 with the "IP Helper address" command？（）

• A、IP Helper is used to direct BOOTP clients to a BOOTP server
• B、IP Helper is used to prevent the router form forwarding IP broadcasts
• C、IP Helper is used to allow IPX clients to communicate with IP-based servers
• D、IP Helper is used to accommodate compatibility routers using different IP routing protocols
• E、None of the other alternatives apply