Which statement accurately describes the split-horizon problem with regard to a multipoint topology?

Which statement accurately describes the split-horizon problem with regard to a multipoint topology?

• Split horizon must be disabled for all non-IP protocols.
• Split horizon creates IP routing loops in multipoint domains.
• Split horizon does not apply to broadcasts, so it does not protect protocols that use broadcast updates.
• Split horizon prevents any interface from accepting a valid update and forwarding to all the other interfaces.

Explanation: Whether using a single physical interface, or an interface configured as a multipoint subinterface, when the remote ends of the virtual circuits are on the same subnet, it is subject to split horizon. If point-to-point subinterfaces are used with each virtual circuit on a separate subnet, split horizon is no longer an issue.

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