Which of the following is a major resonance contributor to the first structure? 
Definitions:
Aggregate Plan
An approach to operational planning that seeks to balance demand and supply in a way that minimizes costs over a medium-term period, focusing on general output levels.
Aggregate Planning
A process by which a company determines levels of capacity, production, subcontracting, inventory, and stockouts to optimize costs against flexibility.
Downstream Partners
Businesses or entities involved in the later stages of the supply chain, focusing on delivering products to the end consumer.
Upstream Partners
Businesses or individuals who provide goods or services to another company as inputs for that company's production process, typically earlier in the supply chain.
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