Please choose the correct ending to complete the given sentence: Health: [header] How to get on and off an escalator [title] Know when to take the elevator instead. [step] If you are using a cane, a walker, or a wheelchair, it's not safe for you to ride an escalator. Similarly, if you have a lot of rolling luggage or have a wheeled stroller, don't use an escalator.

Ending1: If your luggage or stroller overbalances, they will fall over and roll. This could injure any children in the stroller and injure the passengers behind you. Ending2: [substeps] If it's safely for you to lift the things, do so instead of using a wheelchair. [title] Check whether the escalator has a " go first " option. Ending3: The last thing you want is for someone to steal it and fall off the escalator. [substeps] Make sure that you have all the luggage in your backpack. Ending4: Not only will your wobbly board cartwheel you off the platform, but you'll lose your balance and fall. [substeps] Not only will you be halfway down the escalator, but you'll have a dangerously low platform to fit onto.

Answer format: ending1/ending2/ending3/ending4