¿Cuál de los siguientes tipos de promoción ayuda a acceder al inventario con precios fijos?

Preferred Deals (also known as Private Marketplace or PMP deals) allow buyers to access specific inventory at a fixed price before it becomes available on the open exchange. This provides predictable pricing and guaranteed access to premium placements. Programmatic Guaranteed deals also offer fixed pricing and guaranteed inventory, but they involve a direct, one-to-one reservation of impressions, making them less about "accessing" inventory and more about "securing" it. Private Auctions involve an invitation-only auction among a select group of buyers, meaning prices are not fixed and are determined by bidding.