Please choose the correct ending to complete the given sentence: Health: [header] How to identify swimmer's ear [title] Sense an itch in your ear. [step] Itching in the outer ear and ear canal is the first sign of swimmer's ear. [substeps] Because one of the main causes of an ear infection is through your ear being exposed to water, pay particular attention to itching that arises in the days soon after you have gone swimming.

Ending1: [title] Try one of the following tips for ear infections : [step] Listen for a wheezing or a crunching sound when the swimmer gets up from swimming. You may also hear a clicking sound as the swimmer takes a breath. Ending2: However, the itching can come from one of two possible sources: the presence of an earwax infection or bacteria inside your ear canal. [title] Know that ear infections can happen randomly. Ending3: Within five to ten days, symptoms might seem small. After closer notice, it might seem larger. Ending4: Infections due to fungi cause greater itchiness than those due to bacteria. [title] Look for redness inside your ear.

Answer format: ending1/ending2/ending3/ending4