Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to operate a roomba [title] Charge the roomba overnight. [step] To charge your roomba, you need to dock it with the home base. Press the " dock " button on the top of the roomba or on your remote.

Ending1: Wait for it to power on, then hit the " dock " button again. The roomba will then connect to the main wi-fi network (hv-3) and launch. Ending2: Then plug your home base into a wall outlet. [substeps] When your roomba is fully charged, the status light on the top will be a solid green color. Ending3: Once the connection is established, you can charge it by pressing the hotkey (07) on your remote. [substeps] Only the home base should be connected to the roomba. Ending4: Once the connection goes through, the first thing you need to do is press the home button. If it doesn't work, then the main port (port six) will go to the lower right of the roomba so dock should be activated.

Answer format: ending1/ending2/ending3/ending4