Within Display & Video 360, what's a good use case for inventory packages?

Inventory packages are curated collections of non-guaranteed inventory from multiple publishers, often themed around specific content categories or audiences. This makes them ideal for the cosmetics brand (Option A) that wants to reach beauty enthusiasts across various publishers with non-guaranteed placements for their new bronzer line. Option B describes a broad reach campaign with efficiency goals, which might use programmatic guaranteed or open auction, but not specifically inventory packages. Option C involves a conditional deal with a single publisher, which is a private marketplace (PMP) deal, not an inventory package. Option D focuses on a custom ad unit and specific placements on a few blogs, suggesting direct deals or PMPs, not the aggregated, non-guaranteed nature of inventory packages.