Please choose the correct ending to complete the given sentence: Work World: [header] How to tell if a goat is pregnant [title] Wash your hands first. [step] Thoroughly wash your hands with soap and warm water. Make sure to scrub for at least 20 seconds.

Ending1: This will wash away dirt and germs from your hands and to decrease the likelihood of bacteria on your hands. [substeps] Do not use detergent meant for sensitive skin or use salt. Ending2: You can introduce bacteria to the goat, which have open glands around the teat. [substeps] Plus, you don't want to introduce excess bacteria to the milk sample. Ending3: Make sure you are not rubbing your baby's tummy, or else you might cause further discomfort. [substeps] Vinegar can also make bacteria and fungi develop. Ending4: This can help detect any concerning pesticides on your hands. [title] Look into the goat's belly.

Answer format: ending1/ending2/ending3/ending4