Please choose the correct ending to complete the given sentence: Health: [header] How to find a kidney donor [title] Ask family members first. [step] You have a higher chance of finding a compatible kidney donor through a family member, especially an immediate family member. You may consider asking your family members first about getting tested to be a kidney donor before you talk to friends or other acquaintances.

Ending1: [substeps] If a family member doesn't want to talk about it with you, you can trust them by asking more indirect questions about the donor. Ask someone close to you about the donor and questions about the surgeries and types of surgical procedures they have performed as well. Ending2: [title] Look for individuals between the ages of 18 and 70. [step] The kidney donor must be over the age of 18. Ending3: Family members may have some insight into whether or not you're the right match for your new family member. [substeps] Of course, you can still ask previous family members before you ask your prospective donor. Ending4: [substeps] Getting tested for a specific type or an organ, whether rfid or non-rfid has long been linked to kidney outcomes. For example, there is very low likelihood of premature adoptive parents and immature children getting tested for prediabetes.

Answer format: ending1/ending2/ending3/ending4