Please choose the correct ending to complete the given sentence: Cars & Other Vehicles: [header] How to clean battery connections [title] Wear protective gear. [step] Find a pair of nitrile gloves (medical grade), goggles, and a mask for your safety. The batteries contain acid which can cause severe damage, so make sure you keep your face and hands covered.

Ending1: Don't let small children play with the battery while cleaning it. [substeps] You don't even need to wear protective clothing during cleaning. Ending2: You'll also want to wash any wires from your power supply. [title] Douse the battery in a bucket of water. Ending3: Once you have your safety equipment in place, move on to the next step. [substeps] If you get any of the chemicals on your skin, clean it off with soap and water. Ending4: [substeps] Wear long sleeves, gloves, and snap-about mask. [title] Put on a pair of rubber or non-conductive safety gloves.

Answer format: ending1/ending2/ending3/ending4