Which AKS feature allows burst scaling to Azure Container Instances (ACI) without adding real nodes?

1. A KEDA
2. B Spot node pools
3. ✓ C Virtual nodes (ACI connector) (correct answer)
4. D Cluster Autoscaler with max count 0

Shortcut: Virtual nodes use the ACI connector to schedule pods directly on ACI infrastructure, enabling near-instant burst scaling without provisioning VM-based nodes.