Please choose the correct ending to complete the given sentence: Cars & Other Vehicles: [header] How to brake on ice [title] Keep a safe distance from other cars. [step] While tailgating is always a bad practice, it's especially dangerous in icy conditions. Stay at least 8 seconds behind the vehicle ahead of you.

Ending1: If you're not used to winter driving, stay 10 seconds behind. [substeps] To measure your following distance, pick a fixed point ahead of the vehicle you're following. Ending2: This is the distance you need to brake safely at any time. [substeps] If you can, stay behind another car with a clearance high enough so you have enough clearance to enter and exit the vehicle safely. Ending3: Keep a firm eye out for oncoming cars and let them get as close to you as possible. [title] Don't brake with your tires on the ice. Ending4: When a car passes you, look back for oncoming cars. [substeps] Always wear the proper protective gear when driving around ice, such as gloves, wide-brimmed hats, and disposable helmets.

Answer format: ending1/ending2/ending3/ending4