Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to plunge a sink [title] Fill the sink with enough water to completely cover the rubber part of your plunger. [step] If your sink already contains more water than you need to cover the plunger, there is no need to remove the excess water. [title] Remove the pop-up drain stopper, if your drain has one.

Ending1: [step] Some drain stoppers can be removed by unscrewing them from the top. Others need to be disconnected from the pivot rod, which is located under the sink. Ending2: [step] Locate it and unscrew it so that you can access it. If your drain has a pop-up stopper, you will need to use a screwdriver to pry it off. Ending3: [step] Remove the plate holding the largest, water-filled hole you can remove with pliers, or use a nail or hammer to pry this off. [title] Remove the bowl, if there's one. Ending4: [step] Most, but not all, sinks have a pop-up stopper. If yours does not, loosen this by gently pulling on its lip with a length of metal or plastic pliers.

Answer format: ending1/ending2/ending3/ending4