What is the suggested solution for routing when Layer 3 routing is extended to the access layer?

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What is the suggested solution for routing when Layer 3 routing is extended to the access layer?

run an IGP at the access, distribution and core layers
run an IGP between the distribution and core layers and use static default routes at the access layer*
use static rotue from the access to the distribution layer, use default static routes from the distribtuion to the core layer and use IGP amongst core layer devices
run an IGP between distribution and core layers and rely on proxy ARP between the access anddistribution layers