Explanation:

🔍 Requirement:
Multiple products should be sold as a group and not individually.
You want to group multiple products into a single purchasable unit, so the shopper can only buy them together, not separately.

🧩 Why Option A: Bundle is Correct
A Bundle in Salesforce B2C Commerce (SFCC) is:
A composite product made of multiple component products
Purchased as a single unit
Typically used when products are meant to be sold together
The components are not purchasable separately from the storefront when they’re marked as part of a bundle
➡️ Best fit for the scenario: sell as a fixed group, not individually.

❌ Why the Other Options Are Incorrect:
B. Set
A set is a group of products shown together, but each product is purchasable individually
❌ Does not enforce group-only purchase

C. Variation Group
A variation group is for products with attributes (e.g., size/color) — a subset of variations shown as a group ❌ Not for bundling multiple distinct products

📘 Reference:
Product Types: Bundles vs Sets vs Variants
Bundles in B2C Commerce