Refer to the exhibit. Where must an architect plan for route summarization for the topology?

Refer to the exhibit. Where must an architect plan for route summarization for the topology?

A. from the core toward the aggregation and the access toward the aggregation B. from the core toward the aggregation and the aggregation toward the core C. from the aggregation toward the access and the access toward the aggregation D. from the aggregation toward the core and the aggregation toward the access