Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to treat a boil [title] Make sure that the boil is actually a boil. [step] Before you begin treating a boil, it is important to make sure that what you have is actually a boil. Boils are caused by an infection of your hair follicles with staphylococcus aureus.

Ending1: This bacteria has been shown to make boils worse. [substeps] To treat a boil, you first need to make sure that it is a boil. Ending2: This bacteria is naturally occurring in your hair. Before taking any medications if you have an infection, you may want to consider applying a shower head, soap, and conditioner to your scalp to help stop the growth of staphylococcus aureus. Ending3: This bacteria is causing them to dry out, creating new hair. [substeps] If you have a boil, then don't leave it on longer than 1 day without washing it. Ending4: They are contagious and they can spread to a different part of your body or to someone else who comes into contact with your boil. [substeps] Boils may be mistaken for cysts or have cysts beneath them, which requires treatment by a doctor.

Answer format: ending1/ending2/ending3/ending4