A helpdesk technician sets up an Android device for a factory floor worker. The worker should only ever use one specific inventory management app. Which Android feature achieves this complete restriction?

• A.Screen Pinning (the app pinning feature in the security settings), which the worker can leave at any moment because the back key held with recents releases it
• B.Lock Task Mode (Kiosk Mode) configured via a Device Policy Controller, which prevents exit from the designated app without device admin credentials
• C.An Android Enterprise work profile (a managed container on the same handset), which hides the personal apps from view because the launcher filters the work tab separately
• D.Guest Mode (a secondary user with a clean app list), which holds the inventory app on its own because nothing else is installed into that guest profile