For a mobile app using the user-agent flow, two connected-app controls work together when the business wants a long-lived session without repeated approval prompts. First, the app should be set to Admin Approved Users Are Pre-Authorized so users are not asked to approve API access inside the mobile experience. Second, the refresh-token policy should be configured for the required lifetime, such as three months, so the app can keep renewing access without forcing the user to log in again. A session timeout controls the UI session but not the refresh-token lifecycle in the same way. The architectural point is that user consent suppression and durable reauthentication behavior are governed by separate connected-app policies.
This is why options C, D work together as the correct solution.