You manage a public Standard Azure Load Balancer that distributes HTTP traffic across three VMs in a backend pool. The application stores user session state in memory on each VM rather than in a shared cache. Users report that they are frequently logged out and must re-authenticate during a single browsing session. You need to ensure that requests from the same client are consistently routed to the same backend VM while making the minimal configuration change. What should you configure on the load balancing rule?