Please choose the correct ending to complete the given sentence: Cars & Other Vehicles: [header] How to ride a two wheeled scooter [title] Learn how to balance yourself. [step] Since the wheels on a two wheeled scooter are in front of each other, it doesn't balance correctly. Once you get the hang of balancing, you will be ready to ride the scooter.

Ending1: Stand in between the two wheels, which means you will sit, and maintain a straight back. You should keep your back straight and you shouldn't lean. Ending2: [title] Practise on an easier scooter. [step] This can improve your balance for when you ride a two wheeled scooter. Ending3: Make sure you wear enough protection to keep yourself from being stepped on. [title] Get on the handlebars and kick your scooter off the ground. Ending4: [substeps] To balance, place one foot down on the first pedal (pedal-side down) and the other foot on the first pedal (pedal-side down). If you want to balance, only push off the pedals and hop on them.

Answer format: ending1/ending2/ending3/ending4