Which benefit of implementing a dual-homed WAN connection instead of a single-homed connection is true?

Question:
Which benefit of implementing a dual-homed WAN connection instead of a single-homed connection is true?

• Only dual-homed connections support recursive routing
• Only dual-homed connections enable an individual router to tolerate the loss of a network link
• Only dual-homed connections support split horizon with EIGRP
• Only dual-homed connections support OSPF in conjunction with BGP

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