Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to prime a keurig coffee maker [title] Remove the reservoir. [step] You may be getting a " prime " error on your machine due to a dirty water reservoir. Take the lid off of the water reservoir, and remove the water reservoir from your machine.

Ending1: Set the reservoir aside after you get on the machine. [title] Figure out which way the opening of the water reservoir is located. Ending2: Run a line of water through the piston pulley to remove the old reservoir from the unit. [substeps] Be careful handling your keurig. Ending3: [substeps] Before you clean your water reservoir, try re-seating it. It is possible that your reservoir is out of alignment. Ending4: [title] Remove the tank lid on your machine after you've drained it. [step] Place the lid back on the tank lid, and shut the lid back into its holes, then set your keurig machine on a flat, uncharged surface.

Answer format: ending1/ending2/ending3/ending4