Please choose the correct ending to complete the given sentence: Health: [header] How to use a public restroom [title] Look into multiple stalls. [step] When you first enter a public restroom, take a quick survey of the available stalls. Make a smart choice on what stall to use.

Ending1: To plan ahead, look into a third bathroom stall. [title] Remember not to lock yourself in the stall. Ending2: [substeps] You should also factor in any travel locations and recreational facilities, which may already have restrooms, especially if you are travelling by public transportation. Search for stalls that are not specifically designated for use and that you are familiar with. Ending3: If the restroom holds 200 people, a toilet with toilets and a toilet with enough space for 15 people may be the easiest restroom location. This is usually a great option for people whose families or friends are close to the restrooms. Ending4: [substeps] Choose a stall that seems the cleanest. The toilet should be flushed, the seat should be dry and free of any visible debris and there should be toilet paper and seat protectors.

Answer format: ending1/ending2/ending3/ending4