Please choose the correct ending to complete the given sentence: Health: [header] How to live with an allergy to shellfish [title] Read labels. [step] Manufacturers are not required to note it on the label if they have shellfish in them, though many of them do. In addition, items are usually not labelled for shellfish if they contain mollusks such as clams, scallops, or oysters.

Ending1: It is also okay to verify the labels yourself, though. [substeps] Before going anywhere alone with your shellfish, arrange for help from friends, family, and other fish enthusiasts. Ending2: Using a magnifying glass (or something similar) to read a product label can help you determine which products are safe for shellfish. [substeps] Opinion is often more reliable than word of mouth. Ending3: [title] Check if the label contains body parts. [step] Shellfish almost always have an exoskeleton, which protects a shellfish from foodborne illness. Ending4: Therefore, it's always best to read the label. [substeps] It's important to check all labels.

Answer format: ending1/ending2/ending3/ending4